If you want a couple of weeks with Football Manager 17 before release, there's a beta available right now.
Could this year’s edition be one of the best PC games of 2016?
Starting a career in the beta will carry over to the main game if you want it to, but presumably bug fixing could lead to some odd results. Then again, so could Brexit.
There don't seem to be any restrictions on the beta, however, so you can play non-stop until you're fused to your chair, if you want.