Wigan have announced Uwe Rosler as their new manager after agreeing compensation with Brentford.
Marseille have parted company with manager Elie Baup in the wake of Friday's defeat to Nantes at the Stade Velodrome.
The 30-year-old Frenchman announced after winning the treble with Bayern last season that he had agreed to sign a new deal with the record German champions.
Now, following the first two days of pre-season training, he sat down to rubberstamp his commitment by signing on the dotted line.
"I'm really pleased," he told the club's official website. "I always said how great it feels to be at FC Bayern.
"I have a good feeling for me and my family and I hope things will carry on the way they were in the past year."
The 72-time France international joined Bayern in 2007 from Marseille and soon became a hit in the Bundesliga.
He has won three Bundesliga and DFB-Pokal titles and the Champions League for Bayern.