AC Milan coach Massimiliano Allegri says they can't afford to be complacent going into the second-leg of their Champions League tie at Arsenal.

Milan will be defending a 4-0 lead.

"I expect my team to face the Arsenal test with even greater strength than the first leg, because we know it won't be easy despite the advantage we have accumulated," Allegri told Milan Channel.

"We did very well against Palermo, especially in the first half. After the break we were wise to control the tempo and go on counter-attacks for the fourth goal.

"Up until yesterday, Palermo had an excellent home record and a lot of quality in their individual players. Thiago Silva put in a strong performance and scored a goal, but I'd also underline the good show from Zlatan Ibrahimovic and Robinho.

"Ibra returned from his three-match ban with hunger and enthusiasm. He's scoring a lot of goals as well as assists this season and we hope he can maintain this momentum."