Juventus striker David Trezeguet will be sidelined for over a month with the ankle injury he suffered in Wednesday's 2-1 victory at Parma.
The French striker limp off after just 18 minutes at the Ennio Tardini stadium when he landed awkwardly after going for a high ball with Christian Panucci.
And the Serie A giants have revealed the 32-year-old, who has scored seven goals in 13 league appearances this season, will be out of action for 40 days with a sprained ankle.
"This morning David Trezeguet underwent medical tests and a visit to the clinic following the injury he suffered yesterday at Parma," read a statement on the Juventus website.
"The tests showed he has a second degree sprain of the outside part of the right ankle. The prognosis for a complete recovery is around 40 days."
Trezeguet will miss the Serie A games against AC Milan, Chievo, Roma, Lazio, Livorno and Genoa as well as the Coppa Italia tie against Napoli and could also miss the first leg of Juve's Europa League clash against Ajax.
It is a big blow to coach Ciro Ferrara who is under pressure having won only twice in his past seven games.