Milan:Internazionale face AC Milan in the second leg of their Champions League quarterfinal at the San Siro on Tuesday. AC lead 2-0 from the first leg, in which they were at home - theoretically at least - against the team with whom they share a stadium. Despite enjoying supposed home advantage this time, Inter face a huge task in attempting to overturn the deficit against a Milan side, which can boast arguably the best defence in Europe. Going into Tuesday's game, Milan are firm favourites to make it through to the semi-finals. Much of the team's success this season has been built on the foundation of a vastly experienced and almost impermeable back four, marshalled by captain Paolo Maldini.