Love TWD and seeing Punk on it would be pretty cool. Hopefully he'd get to do something cool like fight Rick or attack the Governor instead of being shown for 2 seconds before getting his brain impaled.
Since there is scripted zombie lumberjack wrestling in Woodbury, I can see a wrestling segment, Punk vs Merle or something, and Punk gets accidentaly bitten by a zombie, which had an unplugged tooth left. With that it's possible to cut Punk out immediately or they keep him as a lumberjack zombie (just to have a zombie Punk on screen )
Also might be Punk vs Michonne, hell I'd mark for that more than Finlay beating the Undertaker's streak