The 20-year-old was surprisingly benched for the San Siro showdown against Napoli, despite being the club's top scorer this term.
"It was a decision taken by the Coach and I fully respect it, like I have always respected substitutions in the past," the Italian international told Milan Channel.
"He has given me lots of confidence and shown a lot of belief in me, so there is no problem whatsoever. I respect his choices and, in the game against Napoli, he preferred to start with Robinho.
"There is no problem between the Coach and I, we have a good relationship and we always have had. I am relaxed, I have done well until now and I just want to keep improving."