Cristiano once said that as long as he can still run on the pitch then he will not retire, but he seems to have realized that old age makes his stamina decrease and it would be great if he didn't become a starter. Manchester United management always expects Cristiano to give good results in every game he does and what ten hag has to do is give Cristiano more playing time.
Christiano Ronaldo is unique, at is age he still performs better like an under 17. Even if Ronaldo is 40 he will still perform well for Manchester United. Ronaldo is not active like when he was young, his present performance is still impressive. I heard Ronaldo will retire next year, I feel he should continue with his career.