Chelsea must qualify for the Champions League if they are to attract top players and a manager this summer, according to Kalidou Koulibaly's agent.

Antonio Conte is widely expected to leave Stamford Bridge this summer, with Napoli head coach Maurizio Sarri one name tipped to take over.

Koulibaly's agent Bruno Satin is unsure if the centre-back or Sarri, and defender Elseid Hysaj, are targets for Chelsea but noted the importance of playing at Europe's top table when it comes to talent.

"There’s always a need to refresh things at a club, and that implies a change of players or staff, but I have no information about Napoli, although they certainly need to improve," Koulibaly's agent Bruno Satin told Radio CRC.

"Koulibaly, Sarri and Hysaj to Chelsea? I don’t know anything, neither do I know if Chelsea will qualify for the Champions League or not.

"It’s important to understand how the season will end because important players want to play the Champions League."

Napoli chairman Aurelio De Laurentiis has previously confirmed Conte's failed attempt to sign Koulibaly shortly after his arrival at Stamford Bridge, eventually bringing David Luiz back to the club.

Koulibaly has again been linked with a move away from Naples and Satin says his player's future is once again up in the air.

"Is Koulibaly worth €100m? The market and De Laurentiis will decide because Kalidou has no release clause.The President may also decide to keep him because he considers him important for the team.

"I don’t know if these three games will be his last for Napoli because there have been offers every year, but Koulibaly has always ended up staying, so he won’t necessarily leave.

"It’s difficult to make predictions now, plus there’s also a need to understand what Sarri will do."