The 29-year-old has endured a difficult start to life in Ligue 1 but has still received a glowing reference from his strike partner.
The 29-year-old is on loan with the Ligue 1 side from Premier League strugglers Sunderland. And while he has only scored one goal from his first 10 league appearances for the club, his strike partner has spoken of his admiration for the Scotland international.
"Steven helps me so much and helps the team," he said, as reported by The Scottish Sun.
"He's very unselfish. We have formed a good partnership.
"He draws players away from me. He's strong in the air and bullies defenders. I hope he stays here next season."
Though Fletcher has not been prolific, he does appear to have struck up a decent partnership with the Belgian. The former Burnley man has registered two assists since his move, both of which have set up the 22-year-old.
While Batshuayi hopes the French club will be able to keep Fletcher beyond this campaign, it appears that there is a possibility that both forwards will be playing their football in England next season.
Though Fletcher has struggled for form for much of his time with his parent club, the Black Cats are in serious danger of falling into the Championship.
And if they do end up getting relegated, they may decide that he could have an important role to play in their attempts to get back to the highest level at the quickest possible opportunity.
But should Sam Alllardyce's men stay up, and Fletcher is given another chance at the Stadium of Light, then he could well be lining up against his current teammate next season as Batshuayi has been linked with the likes of Tottenham and West Ham in recent times (via London Evening Standard).