Quick Sell or QUICKSELL is a selling option in FIFA Ultimate Team and FIFA Mobile which allows you to sell your items to the system immediately and get coins instead if your item is tradeable. Quick Sell rates are cheap if you compare them with the rate you can sell your items on the Transfer Market. Quick sell rate for untradeable items is 0 coins.
In FUT, Quick Sell option can be found in Player Actions and Item Actions windows. In FIFA Mobile, it is available in Item Options window.
Once you do quick sell an item, it will be discarded and will no longer available in your FUT Club.