The midfielder struggled to make an impression last season.
"At the moment, he has no intention of leaving," agent Olivier Yenge told Milan News. "I think that, with him in top form, he can get boss Massimiliano Allegri to have a re-think.
"We are hopeful about that. The truth is that he was hampered in the last campaign by a serious injury which he was carrying for three or four months.
"The boy loves Milan and Italy. And, up to this point, Milan haven't told us of any offers they have received for him."