Barca seeks lift against Milan after jolt to morale

MADRID - Barcelona starts the defense of its Champions League crown at home to European giant AC Milan on Tuesday unsettled by an injury to new signing Alexis Sanchez and a sloppy league display.

Pep Guardiola's well-established side has already scooped the Spanish and European Super Cups this term, and is aiming for a fourth Champions League title in seven years, but looked unusually vulnerable in La Liga on Saturday.

The Spanish champion frittered away a two-goal lead to draw 2-2 at Real Sociedad as complacency took over and its trademark passing game deserted it in the second half.