The Transfer Market is not just a great place to improve your team: it's also one of the best destinations to make Coins. If you keep an eye on the Transfer Market — either in-game, on the web app, or on the smartphone app — you will occasionally discover players selling for significantly less than their value. If the auction is close to concluding, you can try your luck and lodge a bid. While you won't always be successful, securing a card with an average selling price of 100,000 Coins for, say, 50,000 Coins is a huge win. You can then flip the player to make an enormous profit. You can usually get the best Transfer Market prices late at night on Sunday through until early in the morning on Monday. You should sell at any time from Thursday evening to Friday morning, as this period will traditionally fetch the highest prices. For more information on When to Buy and Sell Players in FUT, then click through the link.
Depending on how active you intend to be with Squad Building Challenges, or SBCs, it's often a good idea to sell cards that you don't need. If you're lucky enough to pull a highly rated or meta Player, you can consider incorporating them into your team, or just cash in on them instead. Pay close attention to the average selling price of players on third-party websites, so you know their general value and don't get fleeced. We'd recommend exercising some patience and selling when prices are highest, usually on Thursday evenings through Friday mornings. While it can be tempting to open your Squad Battles rewards on Monday morning and flip the Players you don't need right away, this is typically when selling prices are at their lowest, so just sit on the cards until later in the week and you'll make more Coins in the long-run.