Manchester United are interested in signing Uros Racic from Valencia.
The central midfielder, 22, impressed during his time on loan with Famalicao in Portugal last season, and has a £92 million release clause.
But United would hope to get the Serbian for a lot less.
The Sun suggests a fee of £28 million would tempt the Spanish giants to sell.
The box-to-box midfielder is a huge presence at 6ft 4in and is being compared to compatriot Nemanja Matic.