Are you at level 1 and are you trying to sell your 3,4 star players, if so then at level 1 you will face difficulty because like you no body wants to buy a 3,4 star players. And since you are level 1 there is no level below you so your player cannot be put in auctioned at lower levels...If there was a lower level than yours then you 3 star player will appear to the lower level managers as 5 star...