I read that more as "if he's not signing a new contract we should sell him while we can" rather than "not good enough - get rid".
To be clear, I've not seen him play and have no idea if he's good enough or not.
I get that with the Arsenal fan.
The ‘not good enough’ bit comes from me really.
Only 2 EPL appearances last season together with his showreels indicate (to me) his passing and shooting are average for the Premier League (although he has many other terrific attributes). I think Potter is looking at passing and movement in a signing and I’m looking at goal scoring ability, he does not convince, his showreel goals mostly rely on luck or poor defending. You don’t get those luxuries playing for the Albion in the Premier League.