Flamini admits AC Milan will miss Pato at Man Utd
The France international is enjoying his best form since moving to the Rossoneri from Arsenal.
"I know, without Pato it will not be easy," said Flamini. "But we have done very well in attack when he has been missing.
"In the first-leg we wasted a lot of chances. Now it is difficult, but we have the opportunity to produce a great game and retrieve the right result."