The French international, who is recognised as one of the leading wingers in world football, has insisted that the now Red Devils coach was a 'bad man' as he poisoned their relationship right from the start.
Ultimately, despite their problems, Bayern went on to win a league-and-cup double in the 2009/10 season, but Ribery certainly didn't see eye-to-eye with his boss.
"We had problems on a human basis. When he started, nobody knew what was going to happen.
"His idea was that he did not care about names at all, you don't need stars, everybody had to prove themselves again.
"The first contact with him was already poisoned. As a professional you lose your trust. He does great things on the pitch but the coach Van Gaal was a bad man. Our relationship was crushed."
Ribery, of course, is still enjoying a successful stint at Bayern with Pep Guardiola's side on course to secure yet another Bundesliga title, while Van Gaal is starting to implement his philosophy on English soil with the Red Devils in with a great chance of securing their place in next year's Champions League competition.
Controversy is good
From Sir Alex Ferguson to Jose Mourinho, top managers have often been involved in controversial issues with leading players in the game. At the end of the day, the very best have had a ruthless streak and you certainly can't please everyone.
That's perhaps why Van Gaal is the right man for United and will eventually bring the good times back to the club as they go in search of long term success under his regime.
There will be hiccups along the way (we've seen some already), but he will no doubt get things done his way, and that's exactly what is needed at Old Trafford.
Manchester United fans: What do you think of Van Gaal? Have your say in the comments section below!
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