Marseille have pretty good chance to win this match against Rennes because it will play at home so that i will take advantage of home supporters that is the reason to pick home team for betting tonight.
Rennes position is now better than Marseille. and the last five matches of Marseille always draw. I think this match will be draw 1-1.
higher position doesn't mean will win automatically especially Marseille playing at home tonight and i think they have good advantages but for these match i personally prefer to pick both teams to score because as you said they only can play draw in the last five matches