The Brazilian international has been linked with a move to the Viola in recent days, but is also on Juventus’ short list for the summer.
“We can’t afford players like Diego,” Corvino declared on Canale 10. “He has asked for £4m per season.
“We won’t be looking for another midfielder in spite of the injury to Santana.
“Riccardo Montolivo was born for that role and we also have Martin Jorgensen and Stevan Jovetic who can play there.
“As for Branislav Ivanovic, there is no agreement with Chelsea. We continue to track him but there is an outside chance of signing him.”