Marseille face United in the Champions League.
Deschamps told The Sun: "Rooney's form is already much better. He had a difficult world cup but he's coming back. Berbatov is the big threat because of his goals.
"Only one will play of course but Rooney can play on the wing. Even if Rooney hasn't scored a lot this season he's still given so many assists for goals.
"Berbatov is very efficient, even if last season for him was not the best. But they are gifted players that's why United are top of the league."