Raw signed off this past week with Big Show assisting Daniel Bryan in "yes" chants. Big Show has been just as involved in WWE's top storyline as any of its components.
With Show currently "fired" per WWE storylines and not booked at Hell in a Cell, he figures to be involved in the match finish.
Another Big Show heel turn is always likely. This was the case last time Show was fake fired by John Laurinaitis and needed to get his job back.
Given that the match is taking place in a cell, perhaps the giant could be featured in an impressive spot where he destroys the cell.
WWE has a lot of pressure to deliver on pay-per-view following two lackluster offerings that led to fan outrage. Big Show's involvement in a news-making finish could be their solution.
Likely finishes are graded based on believability and how they would advance the current storyline going forward.