I think that this is a nice tutorial,but i think that the 3* player who worth 750k should be kept in the team because he is a fast trainer.Nobody is fool to buy your 750 k 3*.If you were smart you would sell him when he is 4*stars almost 5* and then sell him.From my vaste experience nobody would buy your 3* player worth a lot of money in special at LVL 1.