"I think if you look at his playing time, if you look at the years he has actually played, he started late," Jones said, via ESPN. "He really has excellent skill relative to where his skill set began, what his skill set is. He's got the relative skills. More important to anything, from a mental standpoint, and from the things that also mean so much at quarterback, he's at the top of the list. So I think four to five years."

Father time has caught up with the likes of 39-year-old Peyton Manning, who leads the league in interceptions. But players like Tom Brady, who looks better than ever at age 38, give Jones' sentiments a little more merit. 

However, for Romo to play another four to five years, he'll need to keep his already battered body healthy.