WWE going with Ryback vs Punk this soon just shows even more that WWE has no one that can replace Cena if he is injured. NO ONE.
Well they do have someone who got an insane face reaction, but the WWE wouldn't do another Punk vs Daniel Bryan match.
I hope they book this with Punk winning the match. Then Cena demands a match but Punk would only do it if Cena's team beats his team at the survivor series. Then they have the last match in December and Punk wins. This then leads into his match with the Rock at the Royal Rumble.