The midfielder has no regrets over his decision to leave the Spanish champions and is happy with life at his new club
The creative midfielder, 22, came through the ranks of the Barca youth academy, but opted to leave the club last summer after failing to secure regular first-team action and he feels he does not owe his former team anything.
"I am grateful to Barcelona, but I do not owe them anything anymore," the midfielder told El Pais.
"I would have left Barcelona for any team, just so I would no longer be warming the bench.
"It was my own decision to leave Barcelona. Nobody put a gun to my head and forced me to go. I didn't get the feeling the club believed in me. That's why I moved on.
"I left Barcelona because I wanted to be happy again and play football on a regular basis. I found exactly what I was looking for here at Bayern."
Thiago has made 12 Bundesliga appearances so far for Bayern, scoring twice in the process.