The midfielder has no regrets over his decision to leave the Spanish champions and is happy with life at his new club, with Bayern Munich dominating the Bundesliga
The 22-year-old 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, feeling that they did not have sufficient belief in his ability.
"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.