Ribery and former Chelsea winger Arjen Robben have been pinpointed as the Bayern dangermen by United manager Sir Alex Ferguson ahead of next week's quarter-final first-leg.
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Bayern president Karl-Heinz Rummenigge said: 'We're optimistic about Franck returning for the midweek cup game.'
United have been installed as strong favourites to overcome Bayern to book a semi-final against either Bordeaux or Lyon.
But Bayern coach Louis van Gaal, who won the Champions League with Ajax in the 1990s, insists that the German outfit can beat United on the way to winning a treble this term.
Van Gaal said: 'I think the league title is the priority for Bayern Munich, but all the players want to win the cup too, and the Champions League. I certainly want to win all three trophies.
'We're top of the league, we're in the cup semi-finals, and the quarter-finals in the Champions League - and how many other leading European clubs can say that?
'Only Bordeaux and Inter Milan. It's unbelievable and very good.'
United midfielder Ji-Sung Park claims that the Premier League champions must win all seven remaining league games to secure a fourth successive title.
Park's headed winner in the 2-1 victory against Liverpool on Sunday allowed Ferguson's team to open a two-point gap at the top of the table.
And despite the prospect of the tightest title race for years, the South Korean insists that United's task is straightforward.
Park said: 'There are seven league games left and if we win them all then we will win the title.
'We don't need to worry about Arsenal or Chelsea because if we win our games we will be champions.
'It was a great feeling to score against Liverpool. Derby matches are very important games, so to score the winner is a fantastic feeling.
'Doing it in front of the Stretford End was unbelievable as well because you're right next to the fans' reaction. I was very happy.
'I want to score more goals for United - and it doesn't matter who they are against.
'I know I should score more. I feel good scoring against the big teams like Arsenal, Milan and Liverpool, but I want to score more goals.'