Don't forget to list your players on open bid if you are going to quit the game.
As someone who tried to play '17 for a second year instead of buying '18 (which I do not recommend), it can be very hard to find players on the market once the newer version of the game comes out.
If you list your team on open bid as you leave Fifa '19, it is very much appreciated by people who want to play on with the older version of the game. More players on the market now = more available as the game ages down the line.
Pay it forward people!