AC Milan boss Allegri: Barcelona best team in world
Milan were beaten 4-0 and went out 4-2 on aggregate.
"Luck was with us in the first leg with that deflection into Boateng's path, this time it went against us with Niang hitting the upright.
"It's only normal that this will now be painted as a disaster, but when you face a Barcelona side like this it's very difficult. They knew they had to score at least three, so poured pressure on from the start.
"After 30 minutes we played better and they got a little tired, as they couldn't keep that tempo up. Unfortunately, we came so close and did everything we could.
"Barcelona are the strongest side in the world. Messi and Iniesta kept dribbling with such cool heads in stoppages, Xavi was so sharp. I have to praise my lads for not giving up to the very end, as they could've let their heads drop."