M'Bia has already expressed his desire to leave the former French champions, and Baup confirms that a transfer is likely to happen this week.
"Things could progress during the week for M'bia," he told RMC. "It's clear for me and for him: he has shown his desire to leave.
"He is still available all the same because he had a good game at Montpellier. As long as he's here, he needs to do his best.
"But we need to find the best solution for the club."
M'Bia joined Marseille from Rennes in 2009.