Serie A side Inter Milan are interested in signing Chelsea centre-back Kalidou Koulibaly, according to La Repubblica via Tribal Football.

Koulibaly joined Chelsea last summer from Italian side Napoli but has struggled to adapt to Premier League football.

Koulibaly is being considered by Inter Milan as a replacement for Milan Skriniar, who is off contract in June.

Inter Milan have already registered their interest in signing Koulibaly during talks with Chelsea about extending the loan of Romelu Lukaku.

Meanwhile, former Chelsea defender William Gallas believes Chelsea should have signed World Cup star Josko Gvardiol last summer instead of spending more than £100million on Wesley Fofana and Koulibaly.

Gallas has described Fofana and Koulibaly as ‘panic buys’ and believes Chelsea overpaid for the duo.

“Chelsea were linked with Gvardiol last summer and they should have got him then,” Gallas told Genting Casino. “Instead, they got Fofana and Koulibaly.

“They already have Thiago Silva and Azpi [Cesar Azpilicueta] too so it may be difficult to get Gvardiol now. At the start of the season it would have been a good move but I don’t know if it would be now.

“Chelsea panicked in the summer. They saw some players and put a lot of money towards them when for me, they did not meet their value.

“Some chairmen spend too much money when they have no idea what they are doing.”