Inter Milan president Massimo Moratti insists he won't interfere in Andrea Stramaccioni's tactics.

Moratti is known to favour a three-man defence.

But he insists: "I'm optimistic.

"We have some good material to work with, a capable Coach and a lot of player options.

"A three-man rearguard? I will leave that decision to those who know more about it than me. The Coach is responsible for that."