Don’t boot the game up with two controllers connected
A recent post on the EA Sports support page confirms launching FIFA 14 on Xbox One, while two controllers are connected, may cause the game to crash during startup.
The post breaks down the root of the crash to “using two separate controllers, both assigned to user profiles, and then using controller two to navigate the bootflow when FIFA 14 is loading can result in a crash.”
Additionally, other reports show the game is losing online functions when resumed after suspending the console while on the title screen. Currently there is no patch to resolve the issue, but EA has stated that they are working on a Day One patch to smooth things over, as well as improve Kinect voice commands and other co-op season crashes.