Marquinhos admits the absence of David Luiz is being felt inside the PSG locker room.
The defender joined Chelsea on deadline day last month.
Former teammate Marquinhos told RMC: "The departure of David Luiz? Yes, it was a surprise. It happened at the last moment. Nobody knew. David Luiz was a major player here in Paris.
"My status? Nobody has a status here. Unai (Emery) selects a good team. If I do not work, if I do not run in training, I will not play. It depends on me. Nobody has his place installed as a starter.
"Everyone has to run, work to have their chance to play."