Every Icon shares two common challenges: one to trade fc 24

Add in the cost of the discarded items, sometimes 200 coins itself, plus any extra packs or coins you get, and you are making a profit from each pack even if you don't get any really valuable cards FC 24 Coins.

Wait For Price Spikes
However, you can choose to save certain players for future SBCs when the price of these cards might skyrocket.

Take, for example, Southampton players - a past Marquee Matchups included Southampton as a necessary player and common/rare Bronze Southampton players spiked to 5,000 coins. You have no way of predicting when cards might rise in value, and it can be pretty random, but holding on to players from big teams (Liverpool, Real Madrid, etc.) and from major leagues is a good idea. These might also become useful for future League SBCs. 
This is a long-game method. You might not make any coins, but by selling the value of each pack, you shouldn't lose any either. It's up to you which method you try out.

Players And Managers To Look Out For If you see a Brazilian manager, check the price - these are basically extinct, and there is only one Rare Bronze manager, so this will sell for max coins. English managers also typically sell for decent coins. Players from England's Championship League also typically sell, as well as players from major leagues: Bundesliga, Ligue 1, Premier League, Serie A, etc. As a default, just check the price of everything in the pack via Compare Price. 
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How To Recycle Rare Bronze Into Rare Gold Cards 
Icon Squad Builder Challenges (SBCs) are excellent resources whether you are just starting FUT or have been playing for years.

Every Icon shares two common challenges: one to trade in 11 Rare Bronze players and another for 11 Rare Silver players.

You want to head over to any Icon SBC under the associated tab and navigate to the Born Legend challenge for trading in 11 Rare Bronze Players buy EAFC 24 Coins.