Rennes are going to be hosting PSG tomorrow. What do you think? Do you expect any points from them?

Normally I don't. Because there is still no improvement from them. They were even under the danger of relegation but their recent results got better. They aren't in a so much different position than the one they finished at last season. But... It will be depending on whether PSG makes any rotation or not. Because you know, they have a rematch against Liverpool only 3 days after this game. Actually yeah, they would probably do so.

This might give Rennes a chance then. PSG are already in a very safe condition in the league.
There are 2 definite outcomes in this match and
my prediction is PSG wins or Rennes manages to draw. But it would be more comfortable to bet on BTTS (Yes)
PSG should rotate players and save their main players. Because as you said in the next few days PSG must appear in the UCL. It is impossible to sacrifice the physicality of the main players which can affect their performance in the UCL later. So I believe in today's match both teams to score.
BTW, do you also predict the result of the Marseille vs Lens match? It seems that in this match Marseille will avenge their defeat in the previous meeting and currently Lens is having big problems with several injured players. Do you believe that Marseille can win the match against Lens?