He punched a teammate last year after getting substituted.
Mancini called him to a training camp, not for games. Everyone and their brother got an invite to that camp.
Berardi is a right winger. I don't think I've ever seen him play as a striker. It does make his goal-scoring record all the more prolific, though.
EDIT - Transfermarkt actually says he's played 24 career games as a second striker and 14 as a center forward (mainly years ago and probably out of necessity). But 268 on the right.