However, it seems as though Senegal teammate Sadio Mane would not be best pleased if the move does finally go through.
The Liverpool forward has literally given the move a thumbs down while on international duty with the centre-half.
During an open training session for the African Cup of Nations qualifier against Madagascar, fans unveiled a banner portraying Koulibaly decked out in the Red Devils’ colours alongside a simple message – ‘Come to United’.
But instead of Koulibaly, it was Mane who walked over and gave the fans a thumbs down.
Le moment LOL du jour : Sadio Mané qui va charrier les supporters de Manchester United présents avec une banderole « Koulibaly, Come to United »
Long summers without the beautiful game is often the most painful time of the year for football fans.
One consolation, however, is that it means the transfer market is in full swing.
Many of this season’s new recruits have proven to be superb pieces of business – take Salomon Rondon, who has been heroic for Newcastle and has been lauded as the signing of the season by Tony Cascarino – or David Brooks, who has been a sensation for Bournemouth since his move from Sheffield United.
On the other hand, there have been some dreadful signings too, and talkSPORT.com, courtesy of stats provided by The Sportsman, has identified which players from each club have been the worst value for money by adding up a number of different criteria and dividing the total by the players transfer fee.
Here are their findings…
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Lucas Torreira (£7,221 per minute, win, goal, assist, shot on target, pass, tackle, shot blocked, clearance, interception, cross and big chance created)
Diego Rico (£12,708 per minute, win, clean sheet, goal, assist, pass, tackle, shot blocked, clearance, interception, cross, big chance created)
Alireza Jahanbakhsh (£20,482 per minute, win, goal, assist, shot on target, pass, cross, big chance created)
Ben Gibson (£150,000 per minute, win, clean sheet, goal, assist, pass, tackle, shot blocked, clearance, interception)
Bobby Reid (£6,618 per minute, win, goal, assist, shot on target, pass, cross, big chance created))
Kepa Arrizabalaga (£20,107 per minute, win, clean sheet, save, catch, high claim, punch, sweeper clearance, pass)
Cheikhou Kouyate (£4,154 per minute, win, goal, assist, shot on target, pass, tackle, shot blocked, clearance, interception, cross and big chance created) is the only player signed by the club with a transfer fee or to make an appearance in the Premier League this season.
Yerry Mina (£20,225 per minute, win, clean sheet, goal, assist, pass, tackle, shot blocked, clearance, interception)
Fabri (£20,161 per minute, win, clean sheet, save, catch, high claim, punch, sweeper clearance, pass)
Ramadan Sobhi (£76,000 per minute, win, goal, assist, shot on target, pass, cross, big chance created)
Naby Keita (£27,008 per minute, win, goal, assist, shot on target, pass, tackle, shot blocked, clearance, interception, cross and big chance created)
Riyad Mahrez (£30,181 per minute, win, goal, assist, shot on target, pass, cross, big chance created) is the only player signed by the club with a transfer fee or to make an appearance in the Premier League this season.
Fred (£31,439 per minute, win, goal, assist, shot on target, pass, tackle, shot blocked, clearance, interception, cross and big chance created)
Yoshinori Muto (£16,551 per minute, win, goal, assist, shot on target, pass, cross, big chance created)
Mohamed Elyounoussi (£16,831 per minute, win, goal, assist, shot on target, pass, cross, big chance created)
Ben Wilmot (£40,630 per minute, win, clean sheet, goal, assist, pass, tackle, shot blocked, clearance, interception)
Andriy Yarmolenko (£25,735 per minute, win, goal, assist, shot on target, pass, cross, big chance created)
Leo Bonatini (£25,773 per minute, win, goal, assist, shot on target, pass, cross, big chance created.
Victor Lindelof’s form has dramatically improved in recent months and a pairing with Varane is a mouthwatering prospect for the Old Trafford faithful, although it could spell the end for Chris Smalling or Phil Jones.
Another club who have been linked with Varane is Juventus.
However, should they fail to win the competition, who’s to say the Serie A side wont flash the cash again in the summer and go all out for Varane.
Giorgio Chiellini and Leonardo Bonucci are still extremely capable defenders, but they are 34 and 31 respectively and will eventually lose their legs.
At least one replacement is needed and Varane could be the perfect signing for the future.
He could form a dominant partnership with Juve’s already highly-rated defender Daniele Rugani.
PSG will inevitably be on red-alert with the news that Varane has expressed his desire to leave Los Blancos.
The French champions will still be reeling from their loss to Manchester United in the Champions League quarter-final and their failure in Europe could result in their owners breaking the bank in the summer.
Varane wants a new challenge and although it’s clear the French league doesn’t represent that, he could be tempted to return to his home country and guide the Paris outfit to glory in Europe.
Furthermore, Thiago Silva is set to retire at the end of next season and a defender of his quality will need to be replaced with another leader – Varane represents that.
talkSPORT.com round up all the latest transfer news and football gossip from Wednesday’s papers and online…
Liverpool are ready to agree a deal to sign Juventus striker Paulo Dybala in a matter of weeks, reports in Italy claim. (Tutto Mercato)
Manchester United are leading the race to sign Antoine Griezmann from Atletico Madrid this summer, according to reports in Spain. (Sport)
Chelsea star Eden Hazard has insisted he will not be distracted by the ongoing speculation over a possible summer move to Real Madrid. (Metro)
Thibaut Courtois is said to have turned down a possible return to the Premier League with Manchester United, as part of a deal that could see David de Gea sign for Real Madrid. The former Chelsea goalkeeper has been dropped by Zinedine Zidane following his return as Bernabeu manager. (The Sun)
Liverpool goalkeeper Loris Karius has asked the Merseyside club to cancel his two-year loan deal with Besiktas.(Liverpool Echo)
Manchester United still have a chance of signing Paris Saint-Germain midfielder Adrien Rabiot, after his mother – also his agent – denied claims the 23-year-old has already agreed to join Barcelona. (L’Equipe)
United and Arsenal will lock horns over the signing of Roma centre-back Kostas Manolas this summer. The 27-year-old’s release clause will fall if his side do not qualify for the Champions League. (Calciomercato)
West Ham and Newcastle United are both keeping tabs on Mainz midfielder Erkan Eyibil – the 17-year-old Turkish attacker dubbed ‘the new Mesut Ozil’. (Turkish Football)
Real Madrid midfielder Toni Kroos is a target for Paris Saint-Germain, with the French champions willing to pay €80m (£68.5m) for the Germany international. (OK Diario)
The Frenchman has been a long-term target for United and is believed to be considering his Real Madrid future. The defender is a serial winner and has lifted a World Cup, two La Liga titles and four Champions League trophies.
Similarly to Virgil van Dijk at Liverpool, Varane’s leadership and dominance at the back could transform United into Premier League title challengers next season.
Kostas Manolas (Roma)
United could be tempted into triggering the Greek defender’s release clause of just £30.8million. Manolas and Varane could form a solid partnership to lead United on all fronts next term.
The 27-year-old has vast Champions League experience with Roma, and scored a late goal to knock Barcelona out of last season’s competition.
Manolas has started 21 of Roma’s 28 Serie A games to help the club climb to fifth in the table.
Nikola Milenkovic (Fiorentina)
Milenkovic’s versatility to play as a centre-half and right-back will appeal to United with long-serving captain Antonio Valencia set to leave at the end of the campaign. Ashley Young has been the club’s first-choice right-back with Dalot also filling in at times.
While Dalot has potential to become a solid full-back, Milenkovic could be a ready-made replacement for Valencia.
The 21-year-old has won ten caps for Serbia, including three at the 2018 World Cup, and made 40 Serie A appearances since his Fiorentina debut in 2017.
Douglas Costa (Juventus)
Jesse Lingard is the club’s only natural right winger and Solskjaer is likely to add in this area position in the summer. Like Varane, Costa has been linked with a move to Old Trafford for a number of years.
Cristiano Ronaldo’s arrival in Turin has severely restricted Costa’s playing time this season. He has started just seven Serie A games, scoring one goal in all competitions.
Juventus are reportedly interested in signing United flop Alexis Sanchez, who would have to take a pay cut on his £500,000-a-week wages – and that could open the door for Costa to join the Red Devils.
Here is how Manchester United could line up next season
However, he has made just six appearances for Unai Emery’s side, and has still not started a match.
Emery, who worked with Suarez at Sevilla, is understood to fear the midfielder cannot cope with the ‘physical demands of English football’, The Sun report.
And rather than hoping the 25-year-old adapts to the Premier League, Arsenal will reportedly end Suarez’s loan and send him back to Barcelona.
Given signing Suarez permanently this summer now appears off the table, Arsenal have also already started assessing alternative targets ahead of the transfer window reopening.
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Christopher Nkunku was a target of the Gunners’ throughout January and Emery is believed to be stepping up his interest in the 21-year-old Paris Saint-Germain midfielder.
Arsenal currently sit fourth in the Premier League, two points clear of Manchester United in fifth and only one point behind third place Tottenham.
LIVE on talkSPORT
There are eight live commentaries across the talkSPORT network this week. Find out what they are and where to hear them, below…
Germany vs Serbia (Wednesday) – talkSPORT 2
Kazakhstan vs Scotland (Thursday) – talkSPORT 2
England vs Czech Republic (Friday) – talkSPORT
Walsall vs Barnsley (Saturday) – talkSPORT 2
Shrewsbury vs Portsmouth (Saturday) – talkSPORT 2
Gibraltar vs Republic of Ireland (Saturday) – talkSPORT 2
San Marino vs Scotland (Sunday) – talkSPORT 2
Netherlands vs Germany (Sunday) – talkSPORT 2
They have a relatively easy run-in over the final stretch of the season as Emery aims to guide Arsenal to a top four finish, though the Gunners were handed perhaps the toughest draw in the Europa League quarter-finals last week, with Napoli awaiting the north Londoners in the last eight.