4. Peyton Hendershot
Peyton Hendershot has missed the last two weeks with an ankle injury, opening the door for Sean McKeon to get some looks in his absence at tight end.
It's currently unclear whether Hendershot will be available to suit up in Week 6, or if the team would rather just wait until after the bye week to bring him back. Even if he is cleared to play, he may be a healthy scratch with McKeon playing fairly well.
McKeon is a better pass-blocker, which is ideally what you're looking for from a third-string tight end. Hendershot has more offensive upside as a pass-catcher, but he's yet to show it this season with only 1 catch on 2 targets for 3 yards.
Given how relatively unimportant the TE3 roster spot is, Dallas may simply hold Hendershot out again this week to give him some extra rest and make sure he's fully ready to go for Week 8. McKeon has been a serviceable replacement in his stead and has done nothing to lose the job yet.
This decision will likely come down to the final injury report and Hendershot's status at practice this week. If the ankle is no longer bothering him and he's able to practice fully, then there's a good chance we'll see him on Sunday. If he's still limited or not 100%, however, the Cowboys probably won't rush him back and would be better off rolling with McKeon for another week.