In last season he was the best player for Manchester United but sadly now with the new coach things are completely different for him even in early days of this season management was ready to allow him for going into any other club these things are giving impression Erik Ten hag is surely not comfortable with him, and he is sticking with his players which are giving him better results even Ronaldo can also give him best results, but he is not using him as he needs to be.
I check now mostly he is coming for one half or many times not coming in any match mean coach trusted other players which are under his radar and having good results for him but here surely if he trusted him and give better time then he can give better results and Manchester United performance also on positive run which is going to be good for both parties.
I think after the game Manchester City - Manchester United where Ronaldo spent the whole game on the bench, he will play a full match with Omonia in the Europa League. Ten Hag is unlikely to consider the Europa League as a priority tournament (especially the group stage), so Ronaldo will play here. At this point in time, this is not the worst option for him, as Manchester United are much stronger than Omonia, so in the game with it, he can improve his statistics by scoring a few goals.