but I think Ronaldo returning to Manchester United to become a coach is very unlikely, and only limited to visiting because Ronaldo himself remembers himself being at the club and it is natural that there are many moments that he felt there, and seen from his statement when he was asked about when he stopped being a player then whether Ronaldo wanted to become a coach and his response was less interested in training the younger generation. because with that statement it is clear, about the attitude taken by Ronaldo.
Although Ronaldo has given his answer to the question, it is still possible if he has different interests when he retires. Because the answer given by Ronaldo could be because he is still more focused on being a player than being a coach for a team. However, this could change at some point in the future because a simple answer like that does not mean that it cannot be changed by Ronaldo when his interests change after he retires later.