Fiorentina striker Adrian Mutu could be out for a month after damaging knee ligaments during the 5-2 win over Debrecen.

The Romanian star will reportedly be needed knee surgery again according to football-italia.net.

The club's website reported that Mutu "suffered a lesion in the meniscus ligament of the right knee, the opposite to that which was operated on."

Mutu is set to undergo the operation in the next few days and will be out of action for around a month, missing crucial Champions League ties with Lyon and Liverpool.

Fiorentina also lost Alessandro Gamberini during the 5-2 win over Debrecen last night and he has been diagnosed with a thigh strain.

The central defender should be kept in the stands for around three weeks.

Stevan Jovetic is proceeding through physiotherapy for a bruised metatarsal, while Sebastien Frey is on the road to recovery after spraining a finger.