Manchester United are hoping to sign the Napoli defender Kalidou Koulibaly this summer.
According to Gazzetta dello Sport, the Premier League side have submitted a bid of around £25.9 million for the experienced centre back.
However, club chief Aurelio de Laurentiis has turned down the offer from the Red Devils.
The 46-cap Senegalese international is a key player for Napoli and it is understandable why they are not keen on selling him for that price.
It remains to be seen whether the Premier League giants are prepared to return with an improved offer for the defender in the coming weeks.
Manchester United need to bringing in defensive reinforcements this summer and signing a quality partner for Harry Maguire should be a priority for them.
Koulibaly is undoubtedly a top-class defender and he is at the peak of his powers right now. The Napoli star could make an immediate impact in the Premier League if he joins Manchester United this summer.
If the Old Trafford outfit can sort out their defensive vulnerabilities this summer, they would have a great chance of challenging for the Premier League title next year.
They have been linked with a move for the Real Madrid defender Raphael Varane as well.
Ole Gunnar Solskjaer has already improved his attack considerably with the signing of Jadon Sancho from Borussia Dortmund.