There was some gossip yesterday about him assaulting a 70-year old Portuguese actress on the Don Quixote set.
Depending on which translation version you're reading he either snuck up behind Lidia Franco and bashed her to bits with a chair (unlikely) or he had a temper tantrum on-set and took out his frustrations on a chair scaring the poor lady (more likely).
Safe to say Lidia Franco wasn't impressed with his conduct on-set.
EDIT
Found some clarity on the "allegation":