Marquee Signing Achievement in FIFA 12
Purchase a Gold Player from the trade market for 15,000 or more coins using Buy now
How to unlock Marquee Signing
For this you need 15,000 coins or a friend with 15,000 coins. If you have 15k yourself just buy a Gold player which you want for at least 15k coins. If you don't have it but a friend does, put a Gold player up for sale with a Buy Now price of at least 15,000. Let your friend buy him and then let your friend put him back on the market for 15k again for you to buy. Now you buy him. Achievement unlocked.