He told The Sun: "I have no plans to move clubs again.
"I'm playing for an absolute top European club.
"There are more exceptional players here than in Munich and it's a constant fight for positions.
"I have never regretted moving to Chelsea - it's exactly what I wanted.
"You only develop if you have good players next to you and when every game is a challenge.
"When I was with Bayern Munich I won the Double three times in four years, and then we were often eliminated early on in the Champions League.
"I wasn't excited anymore about winning the German championship yet again. I was looking for a new challenge."