Zambrotta told Tuttosport: "If I were the sporting director of AC Milan, which would be the first move to strengthen the team? We need a real number 9. The club must sign a top-level centre-forward, even more so if Giroud leaves.
"A new striker can change the team: it is the first piece to take into consideration. Then a defender of personality and quality who can help others."
Asked about Ibrahimovic, Zambrotta also said: "Surely the club can start again from Zlatan who knows Italian football well and can make a significant contribution. But, in my opinion, the departure of Maldini and Massara was felt because they had done a great job. The important thing now is finishing the season well starting from the Europa League and then planning the next one well."