Manchester United are prepared to bid big for Napoli defender Kalidou Koulibaly this summer.

The Mirror says Ole Gunnar Solskjaer has so far failed in his attempts to lure the Napoli defender to Old Trafford.

However, the United boss is willing to make Koulibaly the top-paid player at the club should he join.

He will also have to shell out a hefty transfer fee, with the Senegal international rated at around £90million.

Koulibaly is one of the top rated defenders in Europe, and understandably has attracted a lot of interest from other clubs such as PSG, Chelsea, and Real Madrid.

The French champions were willing to offer him a £10.2million-a-year salary in January, although he remains a Napoli player for now.