AC Milan coach Stefano Pioli admits their errors cost them for their Europa League humbling by Lille.

Lille outclassed the Serie A leaders 3-0, with a hat-trick from Yusuf Yazici.

"We were up against a strong team and we made life difficult for ourselves. We hadn't started badly, but I thought we'd be more dangerous in attack and we weren't able to create enough chances," Pioli told Sky Sport Italia.

“With such a strong counter-attacking side, once we went behind, inevitably it opened up spaces and that played into their hands.

“We evaluate the positives and negatives, as always. For the first time in a long while, we have more negatives than positives to look at. We weren't ourselves and made mistakes in the wrong game, because Lille are a team who will take advantage of those errors.

“I am the coach of this team, I experienced the build-up to this match and I can assure you we did not underestimate anyone. We didn't lose sight of the right attitude either. It's just an off day and we will learn from it.

“This is a young squad, but also a mature one that will know how to react to difficulties."