some managers specifically buy players - a little training, add special ability and sell for tokens, it seems to me not very sensible idea to completely delete the negotiations between the levels ((this is one option including buying a good player not drawn in the bowels of the game nordeus)). Once again - now upselling itself does not matter!
it is much more dangerous to be able to train a player above 180% - as such opportunities prevent managers from playing normally (when you are assigned dozens of friendly matches in one day without your knowledge). And it works for any managers - friendly matches allow to train the player even better than through upselling