To easily earn money, buy small, and sell big. Offer players to rich clubs, like in Spain and Italy, but put a high offer price for them. For example, with a £500,000 player, offer clubs £10 million. Make sure you do not get greedy or no club will want them. Be careful when a new season starts and the new transfer budget is announced; you will lose some of your newly required big budget, but not all of it. Spend heavily on quality players before this happens.