However, Manchester United current players are not giving their all to a club in order for other teams to observe and be interested in them. Manchester United will need two to three seasons to improve if they attempt to copy Chelsea because building a squad is not an easy task. Not all of the players wish to stay at Manchester United next season, about five players are willing to accept a proposal from another team, so I expect Man United to act quickly.
This may be very true that the players may not be giving their all to the team. Manchester United will need to sell off some players for them to be able restructure the team and pick young talents who are ready and willing to gibe their all for the growth of the team and their own growth, Amorim is a man who works with building of systems to achieving a long term goal so I believe he is the good person for the job and will need time and resources, two seasons like you mentioned will not be a bad idea at all for him to be able to pull that through.