Leicester City are returning to France for another January signing.
The Foxes wrapped up a deal for striker Fousseni Diabaté from Gazélec Ajaccio over the weekend before lodging a bid for another France-based attacker.
RMC says Leicester have offered €3m to Marseille for winger Bouna Sarr.
OM are prepared to sell, but are insisting Leicester up their bid. An offer of €5m could be enough to see Sarr sold.
Sarr joined OM over two years ago from FC Metz.