Calabria admits he's found the 38 year-old striker an "inspiration".
He said, “Milan is a demanding place.
“Ibrahimovic, who is a veteran, a leader with a lot of experience, helps us a lot. When you see that at 38, he still has so much desire, you can't do anything but improve.
“Ibra always tries to keep his image, but inside the dressing room he makes people laugh, always jokes and we have a lot of fun.
“He always wants to do well and demands the best from everyone. At his age, he may already have stopped for some years, instead he is still here to work hard. He runs like a damned to always win, so for us young people, he's an inspiration."