The Croatian forward must go down as one of the most expensive flops in recent times but the Serie A strugglers have invited the striker to train with them to see if he has what it takes to ensure their top-flight survival.
Speaking after his side's gut wrenching 1-0 defeat to Milan, Perotti said: "Balaban? He must arrive to train with us."
Villa have cut their losses on the 25-year-old, who has only represented the club's first team on eight occasions, never starting a Premiership game.
