Chelsea are looking to sell centre-back Kalidou Koulibaly next summer, according to Italian media outlet Tuttomercatoweb via Goal.

The Senegal international joined Chelsea from Napoli last summer but has so far failed to impress fans at Stamford Bridge.

The former Napoli center-back is considered an expendable asset at Chelsea and could be on the verge of returning to the Serie A next summer with Inter Milan interested in signing the centre-back.

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 Kalidou 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.”