To make it to the PS he needs to start practicing soon. If this is serious and he does not practice soon it might be a IR thing. Heck even know missing over 2 weeks with a concussion makes you wonder how serious it is if he still is have issues trying to pass all the tests.
Yup, I think he's over 2 weeks now. That kinda says it might be serious. If I were him I'd consider quiting. If the team thinks he's a risk they need to cut him as soon as he passes the protocol. It'd be pretty cheap to put him on PS, not so cheap to IR him.