1. Hazard has already made it clear, he said he had no intention to return to France.
2. Ronaldo is on a serious decline, with a transfer ban the last thing Real will want is to lumped with a declining player on a mega salary. The end of the season is the perfect time to sell Ronaldo, to a club like PSG. Selling Ronaldo would leave room for a possible Hazard transfer.
I do hope he stays though, Hazard is a magic player.