The midfielder is struggling to break into Bayern's starting XI.
But Palhinha told BILD: "There's a saying in my home country: sometimes a train doesn't come by twice.
"But in this case the train came a second time - and the doors opened again. All of this showed me once again what a special club FC Bayern is - and that people in Munich really believe in me.
"Bayern wanted to sign me twice and now it is up to me to take responsibility for the club, to become a great player for this club. I am not worried about how much money the club has spent on me or what expectations arise from that.
"My focus is on what I can do on the pitch. I'm here now and I'll give it my all, in every training session, in every game. That's how I've always done it in my career."