The Brazilian has struggled to establish himself at Inter, though shone on Sunday.
"I knew I had quality when I showed up and I knew I could play here, even though the football is different to what I was used to. I know I have quality, and so do the coach and club. I've gone through some difficult moments, but I'm happy about the last two games. I'm in the right frame of mind now and I want to make the most of the chances I get."