I think it would be great to have him back.
The club haven't replaced him and although he doesn't really fit into our style of play he'd still be a great bench option. Top top quality player who would be invaluable in training too.
Glenn always seems to have a massive positive influence on the club.
He wanted to leave to play (so he said) and so it's a shame it hasn't worked out. But... then he wasn't asked to stay by Potter (to help coach etc) and/or he didn't offer to stay. IMO, I guess he was happy to get away from the Amex for now, and Albion were happy not to pay his wages for a year...so we are where we are.