Chelsea are stepping up their bid for Torino defender Nikola Maksimovic.
The Daily Mail says Maksimovic, 24, has been refusing to train with his club amid long-standing interest from Napoli.
But Chelsea have made it clear they are ready to offer more than the £21.5million proposed by Napoli.
And Toro have shown they might be more interested in selling to an English club.
A centre half remains Chelsea boss Antonio Conte's priority, having lost out to Manchester City in the race for John Stones and with Napoli still refusing to entertain offers up to £38m for Kalidou Koulibaly.