Sissoko will complete an initial loan deal for the second half of 2012-13 which grants the Viola an option to buy him in the summer for a reported 3.5million euros.
The 28-year-old spent three years in Italy with Juventus before switching to Paris in 2011, and had previously played for Liverpool, Valencia and Auxerre.
The Malian international, with 28 caps and two international goals, has found pitch time at a premium with the French big spenders and is keen on a return to Serie A.
Sissoko is one of three midfielders loaned out by PSG on the day they signed David Beckham - Adrien Rabiot and Mathieu Bodmer have also left the club for the rest of the story.
- Sports & Recreation