Dzeko's problem is his consistency. He still hasn't been able to maintain good form on a weekly basis in the PL. Mancini's not helping by using him in a role that doesn't suit him though, forcing him to drop deep, going out wide and contributing too much to build-up play. It's in and around the box where you want him. Still think his game is too slow for the PL tbh, I think he'd be incredible in the Serie A.