The midfielder was re-signed from Parma earlier this summer.
"I wasn't sure I would be back, I only had the hope," the 25-year-old reflected to Hurra Juventus.
"I am from Turin, Juventus is the team I started my career at. To wear this shirt again was my ambition. Now I am here.
"Three years ago I was in my early 20s, I wanted to prove myself, which is normal for any true player. They say I have succeeded in two seasons at Parma - they say with the performances, goals scored, the attention that Juve then had on me again.
"I have changed for the better and my footballing growth is not yet complete."