Foles is unlikely to bring a significant pick so I can’t see the Eagles moving him with Wentz’ status in question.
It would also be tough to get a top backup to replace Foles. Those guys (like McCown), typically want to go somewhere they have a chance to start. Foles played better than many people thought, but it’s the wrong year to be shopping a guy like him with Cousins on the market along with several other decent QBs who might be available as well as the best rookie class in quite awhile.
For those reasons, I can’t see Foles going anywhere. One of those situations where it’s probably best for the Eagles to sit on him next season. Maybe move Foles at the trade deadline if Wentz is fully recovered & playing well. That said, it probably makes sense for Philly to play it safe & keep him considering what they would likely be able to get in return.
Interesting situation for you guys.