Former Juventus coach Fabio Capello says they must keep hold of Paulo Dybala.
With new contract talks dragging on and Dybala struggling for form, the Argentine has been linked with a big sale this season.
But Capello told Gazzetta dello Sport: "The explanation is Covid. The virus leaves residues especially for someone like Dybala who needs to be at the top to express himself at his best.
"To find him he has to get back to 100% physically. Dybala looks like (Dejan) Savicevic even if the Argentine is better at finishing and less at assisting his teammates.
"If I had to change him with someone, who would I change him with? For an answer, I look to England and think of (Tottenham striker) Harry Kane."