I heard concussion too but it'd be really, really weird to diagnose a kid with a concussion, or even think he might have a concussion, and then let him put on sweats and walk back onto the field for the 2nd half. Again, nothing is impossible, but that's really weird "treatment". If you have a concussion, you're in the locker room.
But, it would make sense considering he came out with no braces, support, bandage, etc. So nothing looked physically hurt, which means it's very possibly only his head was hurt, but again if that's the case, why the **** is he on the sideline?
Either way, and please punch me in the **** if this turns out to be wrong, but a player walking out in sweats with zero noticeable injury really doesn't scream "long-term" to me. If he was on crutches, in a boot, in a sling, etc....obviously. But he was just chilling in sweats, can that really me a several week thing?
I'm leaning towards we see him for FSU.