They've only picked up three points in three matches this season. They're less promising than last year. You'd expect Marseille to only drop points against Paris Saint-Germain and Monaco. But they've already suffered defeats against Lyon and Lille this season. Frankly, I don't have high hopes for them. They'll be fighting for a Champions League spot in France. I don't think there's a team that can beat Paris Saint-Germain in France again this year.
The match against Rennes showed that they were poorly prepared for this season, because Rennes received a red card in the middle of the first half and despite this they were able to beat Marseille. The match against Lyon was more difficult because this time Marseille received a red card and it was clear that they would not be able to withstand such an opponent with a minority. Lyon has not started the season badly yet, the only team besides PSG that has not lost a single match, but it seems to me that this is temporary and they will not be able to compete with PSG for a long time.