Recently i've been thinking about the methods that worked a treat last year and this was one of the more successful methods throughout the whole of FIFA 16. I did make a thread about this last year which can be found here: http://fifaforums.easports.com/en/discussion/123024/99-contract-method#latest
If you don't know this method here is a quick run through it:
Buy a player for his cheapest BIN - eg. Ter Stegen for 1000 coins, buy a 99 rare gold contracts at 450/500 coins and a cheap chem style for no more than 200 that fits the style of the player. so all together you would pay 1700 coins for a ter stegen with 99 contracts 99 fitness and a cheap chem style.
Similar to the NIF and IF method threads that already exist, you want to list for an inflated price compared to the rest of the market. This method is yet to be tried by me this year, however i have some cards listed and will report my progress back to this thread.
TIP: Try to make 2.5k on every player after buying contracts, on more expensive players, aim for more profit!
TIP: Use 99 Contracts as they are cheaper than 4 rare gold contracts
FACT: This method does not make you rich overnight, it takes time!
Thanks for reading and good luck trading!