Football is a sport that doesn't get left behind in the yearly batches of sports franchise installments, and "FIFA 17" is no different. EA Sports put in a lot of things and secrets that players should be spending a lot of their time to uncover, and also apparently some vulnerabilities that some are willing to exploit.
For players who want to create the best soccer avatar or assemble the best team in "FIFA 17" and are not above using a little hack to achieve it, there is a cheat out there somewhere. Once we reveal it, however, you're going to want to take advantage of it before EA Sports finds it and shuts it down. All you have to do is Google getting "FIFA 17" unlimited coins, and you'll find a website that claims to exploit a "programming flaw" in the game that will allow you to get as much currency as you want.
The website, once you find it, will prompt you to enter your "FIFA 17" Gamer ID and the amount of coins you want added to your account. The site doesn't recommend getting more than 500 coins a day so as not to be suspicious. Any more and you could attract the wrong kind of attention to your account. Before anything, though, do take the site with a grain of salt as sometimes things that look too good to be true usually are.
If this does actually work for you, then do tread carefully in getting these coins. Game developers are policing cheating in online games a lot more carefully these days, if they're taking Blizzard's lead in monitoring games like "Hearthstone" and "Overwatch." There's no reason that "FIFA 17" and other EA Sports games would be policed, and you'd do well to be careful lest you lose your account and not be able to play the game at all.