Lookman, DCL, Davies, Vlasic - they've all benefited from playing together. Tosun commented on it and so has Gylfi.
I don't have an issue with letting him go, as long as we replace him.
Completely different types of player and people, though.
Ronaldo is superhuman but part of that is genetics as well. It's not all down to discipline/training.
Ronaldo has also been playing in LaLiga - a much slower league overall - for the past nine years. Rooney has been in the PL for 16 years.
While I'm not saying the Prem is the best league, it is the most intense over the course of a season.
Ronaldo has managed to perfect a role in recent years of actually doing very little in a game - his effort is reserved for short, sharp bursts of pace and pieces of magic.
Rooney has never been that player. He has always been an 'all action' player who tries to put himself about.