Monaco boss Leonardo Jardim has declined to confirm the departure of Kylian Mbappe despite acknowledging the forward could leave the club as soon as Monday.
The impressive victory extended the champions' perfect start to four straight Ligue 1 wins, three of which they have managed without Mbappe's services.
Speaking after the match, Jardim shied away from clarifying the star teenager's future.
"As of today Kylian is our player, that is why he was on the bench. Maybe that will not be the case tomorrow but for now it still is," Jardim told Canal+ after the match.
"I needed him for the game, but at 4-0 I changed my mind and played other players."
Monaco's victory over a previously unbeaten Marseille came courtesy of a blistering four-goal first half.
Radamel Falcao bagged a brace to improve his season tally to seven goals and the captain earned praise for his dedication to the team.
"Falcao is a big scorer. But the most important thing is his attitude," Jardim said.
"He is a real team player."