The Rossoneri midfielder believes that his fellow Ghanaian has a lot to contribute to the side and speaks of his long-standing friendship with the club's new arrival
The 31-year-old signed an 18-month contract with the Rossoneri on Tuesday after opting to leave Chelsea and the Ghanaian is looking forward to linking up with his countryman.
Muntari told Milan Channel: "I'm convinced that he can give so much at Milan. Me and my team-mates are helping him to settle as soon as possible."
The pair have regularly played together in Ghana's national side and know one another well.
"He's a quiet guy and does not talk much," Muntari added. "We've been friends for 12 years; we have often shared a room when we are with our country.”
Despite Milan's Coppa Italia exit to Udinese, the 29-year-old remains positive over the remainder of the Rossoneri's league campaign after two late goals gave them a 2-1 win at Cagliari on Sunday.
"Cagliari's victory gave us great confidence," he enthused. "We must continue to do well.
"We have to give continuity to the results against Torino on Saturday. We are listening to the coach and we are trying to put into practice in his ideas.
"[Clarence] Seedorf's work is not easy, it is important to create a compact group. Things are going well and we want to follow this path."