According to Di Canio, he made the decision on signings. Until he was sacked when he changed his story and said he had no say in it? I don't believe a word of what Di Canio says. His story changed every time he was interviewed.
He said he had final say which makes sense. That means he had a choice given by someone else. Paolo didn't scout the player, compile the short-list and then say to himself 'you can either have this player or that player' did he? We haired a DoF. Do you think we recruited Di fanti as an office clerk? If a club has a director of football, the buck stops with him in the transfer market as it's his area, and it did, Di Fanti was sacked. Paolo wasn't a manager he was a coach, the buck stopped with him on the pitch and it did, he was sacked. The sacking of Di Fanti imo demonstrates 100% to me that the club acknowledge that his signings have not been good enough.