You must list a specific player card on the Madden Auction House.
Buying Madden Ultimate Team (MUT) coins from third-party sellers is and carries a high risk of permanent account bans. If you choose to proceed, the standard industry method involves purchasing from a marketplace and transferring the funds via the in-game Auction House. Third-Party Purchase Process how to buy mut coins
The seller then "buys" your card, transferring the coins to your account. You must list a specific player card on
Most third-party coin sellers follow a similar fulfillment process to avoid detection: how to buy mut coins
: Note that EA takes a 10% tax on all Auction House sales, which most sellers do not cover unless specified. Official & Safe Alternatives