diego offers creativity, dzeko offers goals. it's not like you trade one striker for another. they play in a different position. in addition to this i want once to see diego with a good striker in front of him. i think that the diego-dzeko compination will be just perfect...
i'd keep momo. in a system with 2 midfielders on the center he can offer really much. poulsen is well known in germany and i think that wolf would like him as an exchange...