Free Players in Manager Mode
Start by giving the team an offer that they accept. Then make the player decline his contract offer. After that, buy the player again but for 0 bucks and submit the offer. Go back to your message box and make the player accept the contract offer. You lose the wage you give him, but you bid 0 bucks for him.
Like Never Losing
Basically, if you're losing a game of FIFA in a Cup or the divisions, then when the referee blows the final whistle pause the game and forfeit.
You'll get kicked out of Ultimate Team but when you go back on it's like you never played the game - it doesn't count for anything!
Login to Ultimate team.
Go into your team, select a player from the concept squad you wish to duplicate.
Go onto the market, buy that player. Then do the glitch where you can fake duplicate a player in your team, easily found. Then make sure you add another concept player (any player). Go into an offline singles tournament game. As it says that you cannot play a game with the concept player, edit line-up then go to settings on your console, change your location to India. Go back then press B A X B RB LT LT A which then should allow you to go into the game, as the starting whistle is blown, quit fifa, go back into ultimate team, you then have the player that you duplicated along with the concept player :) Enjoy!
Coin Glitch for Ultimate Team
Go to Ultimate and you'll see "Concept Players". Click on any player that you like and then start a match.
It will say "Concept player not allowed."
But to play, simply click on the player you want and press RB, LB, RB, LB and then you should be able to play with him.
You should be able to get Ronaldo, Messi, Ibrahimovich, Persie, Rooney and Suarez.
Note this cheat is not confirmed...