The Daily Mail is reporting that Mourinho is prepared to concede defeat in Manchester United’s pursuit of the impressive Senegal international.
The same article states that the Serie A giants are likely to ask for close to £90m to sell the powerful African defender in next month’s transfer window.
According to the same story, Mourinho is growing increasingly “pessimistic” about Manchester United’s chances of signing Koulibaly in what would be a world-record deal for a defender.
Manchester United are facing an injury crisis at the back, which forced the Red Devils boss to field Scott McTominay and Nemanja Matic in the back four in Saturday evening’s 2-2 draw at Southampton.
The Red Devils have already conceded 23 times in 14 games in the Premier League this season to raise questions about Mourinho’s defence.
It has been widely reported that Mourinho was eager to sign a new centre-half in the summer but the Manchester United board were seemingly unwilling to pay over the odds for a defender.
The Red Devils boss has been given the funds to invest in new centre-halves since taking over the reins at Old Trafford.
However, Eric Bailly and Victor Lindelof have struggled to perform on a consistent basis.
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