Football related issues I believe that Dzeko is a special player, one of those who don't come around often while Diego although being a good player can be replaced. We can also fix our team better without Diego who really needs the team to be built around him so he can function at his maximum. He needs runners beside him and good passers behind him and we have none of these.
Non football related reasons are basically two, one is that I have a friend who is not in the slightest interested in football, from Bosnia and would become interested because of the fellow country man playing at a high level.
The other reason is giovanotti's reaction ... I am dying to see what he will rinse and repeat post in post out if Diego "did not stay"