Milan announced the capture of the Barcelona striker yesterday.
"If the President does buy Ibrahimovic, we will all be very happy, because he is a champion who can complete an already very strong strike force," said the Coach.
"I wouldn't say Milan are Scudetto contenders with Ibra, as I think this squad is strong enough to challenge even without him.
"In any case, the most important thing is the game with Lecce. Hopefully we can celebrate Ibrahimovic's arrival with a victory. Borriello shouldn't be worried, as he had an exceptional campaign and it's impossible to always play the same XI."