United led 2-0 after seven minutes from goals by Darron Gibson and Nani. Man-U added another goal in the 41st minute to make it 3-0 before Ivica Olic pulled one back for Bayern in the 43rd.
United was reduced to 10 men in the 50th when Rafael da Silva was sent off after being shown a second yellow card for tugging at Franck Ribery. Arjen Robben scored a late volley in the 74th minute to send Bayern Munich into the Champions League semifinals.
Man U boss Sir Alex Ferguson's was clearly disappointed in his post match media conference.
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