So you are saying you can't bring in players that can develop into top players for the club. United has been great like that over the years, especially with young players. I am not using it as a gauge, I'm saying it's possible to bring in players who are able to develop into top players. Some very good players move to clubs that are not in the Champions League.
Your second point, on first look is quite accurate but there are some players who are young and will see first team football at a big club as an exciting challenge. So United is still an attractive option for some. Don't get me wrong, I see the point about not wanting to play this football under Moyes but at the end of the day, you can't speak for everyone.