Tottenham Hotspur have reportedly identified Napoli centre-back Kalidou Koulibaly as one of their top summer transfer targets.

A number of Europe's top clubs, including Manchester United, Manchester City and Paris Saint-Germain, have been linked with a move for the 28-year-old, who is widely regarded as one of the best defenders in world football.

Everton and Newcastle United have also been credited with an interest in recent weeks, and transfer expert Gianluca Di Marzio claims that Spurs have now joined the race too.

Jose Mourinho was strongly linked with a move for Koulibaly during his time in charge of Man United, and he has now reportedly carried that interest over to Tottenham.

"Napoli's Kalidou Koulibaly could be one of their most important targets. There is a very good feeling between his agents and the Tottenham chairman. I think Koulibaly will leave Napoli this summer," Di Marzio told Sky Sports News.

"Only last summer, Napoli signed Kostas Manolas who is a similar player to Koulibaly and then they got another defender in, Amir Rrahmani from Verona. Napoli have been thinking to the future without Koulibaly. A couple of years ago, they would not have been open to the idea of Koulibaly leaving.

"But the last year was not his best for Napoli, so I think this could be the right moment for him to leave. As well as Tottenham, Carlo Ancelotti wants him at Everton. His agents have very strong contacts within the Premier League clubs. So, I think the percentage that Koulibaly could arrive in the Premier League is very high."

Koulibaly has been limited to only 21 appearances across all competitions this season.