Source: The Wrestling Observer
John Cena has another medical evaluation scheduled for Monday and the belief is that they will decide if he will be ready to work the Hell in a Cell PPV on 10/28. "Several different possible booking scenarios" were discussed according to this same report. They'll re-write RAW on Monday based on what they hear on Cena during the morning.
As reported earlier today, a poll conducted by WWE on Twitter showed 69% of fans wanting Ryback to be the one to face CM Punk at Hell in a Cell.