This is a list of the 15 oldest players currently on the roster.
1. Tony Romo (35) - Will remain the starting QB for as long as he is physically capable of playing.
2. L.P. Ladouceur (34) - Under contract through 2017 and playing at a high level, team brings in young LS for look every camp.
3. Jason Witten (33) - Also under contract through 2017 and still playing at a high level (Gavin Escobar under contract through 2016).
4. Jeremy Mincey (31/32 in Dec) - Entering final year of contract, unlikely to re-sign if another team offers good money.
5. Brandon Weeden (31/32 in Oct) - Entering final year of contract, needs to impress if he wants a new deal with any team.
6. Doug Free (31) - Under contract through 2017, doubt he'll see final year of the deal.
7. Jasper Brinkley (29/30 in July) - Roster spot should be secure this season, likely to be released in 2016.
8. Mackenzy Bernadeau (29) - Entering final year of contract, unlikely to return in 2016.
9. Nick Hayden (29) - Playing on one year, minimum salary benefit deal, may not stick this year, not in team's long term plans.
10. Jed Collins (29) - Playing on one year, minimum salary benefit deal, in fight for roster spot with Ray Agnew (24).
11. Keith Rivers (29) - Playing on one year, minimum salary benefit deal, unlikely to make roster.
12. Brandon Carr (29 this month) - Needs to take a pay cut this year and next to remain on roster, I believe he will.
13. Sean Lee (29 in July) - Obvious health concerns, but contract not an issue until 2017.
14. Orlando Scandrick (28) - Under contract through 2018 and looking for a raise in pay.
15. Darren McFadden (27/28 in Aug) - On a cheap, two year contract, uncertain to return in 2016.
Of these 15 players, Mincey, Weeden, Brinkley, Bernadeau, Hayden, Collins and Rivers are unlikely to return to the team in 2016.
That's 7 players, which is almost half of the list.
Free, Carr and McFadden are unlikely to return in 2017, which would bring the count to 10 players.
This would leave Romo, Ladouceur, Witten, Lee and Scandrick as the last 5 standing, provided continued good health and playing performance.