According to some speculation, Inter will play Dzeko over Lukaku at the start.
Not sure if it is the correct choice, for sure he has more experience.
Nothing wrong to put Dzeko as the starter, Lukaku can have time to analyze Man City players' movement, especially the defenders. So, when Lukaku replaces Dzeko in 2nd half, he knows what to do after he analyzes the weaknesses of Man City defenders. I think it is a good tactic to let Dzeko plays first, while keeping Lukaku to play in 2nd half.
Dzeko may become stand alone striker. Lukaku will give more benefits for intermilan caused by he was able helping its team by taking multiple role.
No, Inter will use 2 strikers. Dzeko will play with L. Martinez. So, it is untrue that Dzeko probably plays alone striker. L. Martinez seems to play full-time, Inter Milan needs this striker to break Man City defense.