What makes you think Dzeko is a better option than Llorente?
1.- He needs a good buch of oportunities to score one gol that makes him needs a lot of patience as he's not specially mentaly strong.
2.- can't stand psicological pressure very well.
3.- Everytime he has faced some real opposition to get out the bench he has fail. He as one of the two or three players del Bosque didn't give any minute in this Eurocup... and David Villa was out because of an injury.... He's world and european champion but he as merely play for 30 minutes in both competitions.
4.- Takes him a lot of time to get in perfect physical condition and he losses it quite quickly.
5.- I think Athletic was perfect for him because he hadn't rivalry in bench, the club and fans had a lot of patience with him, the club and fans were not demaning titles so the psicological pressure was not so high... I'm not so sure if he could get the same from a club urged to win european championships