Togolese international striker Razak Boukari has signed a four-and-a-half year deal with Rennes on Monday from French first division rivals Lens
The 23-year-old arrived in Lens in the 2006-2007 season on a five-year deal from French lower league side Chateauroux.
Brittany outfit Rennes are currently riding high in the French league one point behind leaders Lille.