20 mil for Dzeko?Hmmm too much just for a head scoring player..
They paid 27 mil (pounds) last year, so 20-25 mil (euro) is a great deal and well worth it.
Remember Alexis Sanchez going to Barca for 40 mil and Torres for 30+ mil... those are too expensive.
Dzeko did very well with limited playing time. When he was a regular starter, he was the top scorer in England. He is much more than just a player who can head the ball. That's not even his strength.
Watch more of Dzeko and you'll know.