AC Milan could be without playmaker Kaka for Wednesday's Serie A clash with Sampdoria.

The Brazilian added to the club's injury woes after he sustained a back problem during Saturday's 2-1 defeat to Roma, which left Milan four points behind fourth-placed Fiorentina.

Clarence Seedorf also suffered a recurrence of a thigh injury and fellow midfielder Yoann Gourcuff picked up a knock to his ankle.

All three players will undergo tests on Tuesday to determine their availability.

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