The Belgium international was part of the Zenit side that lifted the Russian Premier League title this season, but now has his sights set on plying his trade elsewhere.
Indeed, Witsel has admitted that he is excited by the prospect of linking up with Champions League finalists Juventus.
"I'm 26 years old, the best age to try a new experience," the midfielder told Sudinfo. "I always said that I did not want to leave Zenit without lifting the league title. It's done.
"My favourite league? I don't have one. My goal is just to move to a top club in a top league.
"There have been discussions [with Juve] and they are continuing. This is a super team with a beautiful project to become again what it was in the days of [Zinedine] Zidane and [Pavel] Nedved.
"The contact is ongoing, with both me and Zenit. [Turin] is a destination that could suit me."