try keeping 3/4 spaces open for 3/4 star player`s that are close to next star and train to 1 skill away from said star but make sure their young ( ish ) and add the skill on then wait for token bids meaning extra cash + the tokens
edit; don`t bid on anyone that has had bids look for player`s that have not been bid on and bid last second in case someone else bids at same time