There is no doubting on his day Edin can be a formidable striker, but why is it we only see that on the odd occassion?
The pace of the Premier League does not help him, our passing game does not suit him, his build up play with Silva, Nasri, Kun and Tevez is poor and he is almost an undroppable player, the minute you drop him regardless of form he goes to pot. He just does not suit a team that rotates on a consistent basis.
Dzeko's flaws in my opinion are his touch, pace, mobility and work rate, all assests that are needed to be a top class forward in the Premier League, he either needs to significantly work on these or we we still carry on asking questions.
See I honestly don't believe just adding a top winger is going to completely revolutionise Dzeko, the whole system has to change in my opinion, it would have to change to a more direct philosophy silmilar to that of United's.
With Txiki, Ferran and Pellegrini in charge there is no way we will deviate from our possession game, Edin has to adapt to this style of play or he will find himself struggling.
Dzeko is a top class center forward but he does not fit our style of play, and unless he adapts we will look elsewhere for a center forward who has the attributes that can fit our style of play.
You look at Cavani, yes he is expensive, but he has all the attributes to be an upgrade on Edin; better touch, better pace, better mobility and by far better work rate. Obviously paying what Napoli want would be ridiculous, but Cavani is definately for me the type of center forward that would work in our system and be an upgrade on Dzeko.