I don't think Ruud Van Nistelrooy would want to be Ruben Amorim's assistant. I think Ruud Van Nistelrooy had a better career as a footballer. Of course, in terms of coaching career, Ruben Amorim has had a better career. Ruud Van Nistelrooy is 48 years old. Ruben Amorim is 39 years old. This might create ego problems. I think Ruud Van Nistelrooy will leave his post or take a more passive role in the team. But there is no doubt that when the time comes, Ruud Van Nistelrooy will be at Manchester United once again.
I also don't believe that Nistelrooy will be an assistant or something like that, most likely if he stays he will be in an administrative position. Amorim is new, and Nistelrooy has already won 3 games with United. Amorim needs to take full control and it's not even a question of ego. The powers of those responsible must always be as clear as possible, without any unclear schemes where one comes and the other seems to leave, but not completely.
This depends on offers. I believe that Ruud will stay until he gets a better offer. He wasn't at that team as manager, not like they fired him and got Amorim instead, Ruud was there for another job, and took over until Amorim got there as interim and that means he is not going to really do anything crazy at all. I believe the best thing in this case for Ruud would be stay at the job, don't leave, and wait for offers to come, and accept it when a good one comes along.
This would make more sense, because we are dealing with something that actually makes sense, we are seeing a greater deal and I believe we are going to get as much information as we possibly could. I believe the best way to improve would be just take a deal when there is one, but keep working until there is one. What is he going to do if he leaves now? Will he just go and wait at home until a new offer comes along? Makes no sense, and he only recently joined too, so why leave so quickly?