The winger is a target for Newcastle United.
But Rolfes told the Daily Express: "No, no. For sure we want to keep Moussa for as long as possible.
"I know a lot of scouts have been sitting on our tribune during our matches because we have a lot of interesting, exciting young players with high potential.
"It is always the same, we do not have any offers for him but we are not looking for that at the moment. We would like to keep him and for him to play with us next season in the Champions League."