I think it's the wrong question. The real question is what do you do with Sam Bradford?
There's really no reason to do anything with Bridgewater other than let him continue to rehab. He's under contract for the next two seasons, makes $1.9M next season, $2.2M the season after so there's no cost issue that requires a decision to be made in the next few years.
Meanwhile, Bradford has a $4M roster bonus and $17M cap hit for 2017 before becoming a free agent, so they really need to decide whether Bridgewater will be back for next season or not. $17M is not bad for a starter, but if Bridgewater is back and starting, that's a ton to pay a backup.
If they want to keep Bradford, they will have to do something because he's a free agent after next season. Bradford will also be turning 30 next season with an extensive injury track record. So they'll have to make some type of decision on Bradford long before they need to do anything with Bridgewater.