Fiorentina have offered Nikola Milenkovic to Manchester United.
The Daily Star says United manager Ole Gunnar Solskjaer has made signing a centre-back his top priority in the upcoming transfer window.
He wants to partner Harry Maguire up with someone more reliable, with Eric Bailly's fitness a problem and Victor Lindelof too inconsistent.
Fiorentina have offered the Red Devils a chance to sign Milenkovic - with his contract set to expire in 2022.
Rather than lose the Serbia international for nothing, they are keen on getting some sort of cash for him.