Luckily I can help you out.
http://www.dallascowboys.com/video/2017/01/10/cowboys-hour-2016-tyron-smith-doug-free
http://www.dallascowboys.com/video/2014/11/18/cowboys-hour-tyron-smith-and-doug-free
Smith, Martin and TFred all say Free was the leader of that OL that placed them in the Pro Bowl.
Parnell was overpaid because he was young with lots of upside. No one in Jax was excited about his first couple seasons.
They were winning 3-4 games and terrible.
His ACTUAL CAP HITS were
8m
6.5m
6.5m
Free was a better run blocker than Pass Blocker in the end and of course in 2016 Free helped Zeke run to the rushing title.
Free allowed 3 sacks in 2014
4 in 2015
before 7 in 2016(while shockingly being graded as the team's best run blocker internally).
Parnell allowed 3.5 sacks in 2015
5 sacks in 2016
before an excellent 1 sack last year.
Parnell was NEVER starting here over Doug Free.
NEVER. The team had him and didn't view him that way.
They viewed him as a great Swing OT.
So he moved on to make big money for a team who missed on draftee at OTs.
And after a couple of years of shoddy cap value he is now a good value because they front-loaded his deal.
https://www.all22.com/dallas-cowboys/smith-free-highlight-best-tackle-tandems-in-nfl
The Cowboys have tried to stake their identity as a "hard-nosed, run first" team. So losing a very good guard like LG Ron Leary hurts. He will be missed, as will the veteran leader of the o-line, Doug Free. I know that many fans saw Free as the weak link of the line, but the reality is that he was that group's leader and the consummate pro who played through painful foot injuries. Too often in life, we don't appreciate things until we don't have them anymore. Will that be the case with Leary & Free?
The best part of the Cowboys this year is the offensive line with three potential Pro Bowlers.
Free is not one of those guys, but he is the unquestioned leader of the unit.
“Doug brings the things to the table that we don’t have as a young group, which is experience, the game intelligence that you learn just through the years and really that kind of sense of leadership as well as far as kind of pointing us in the right direction,” said center Travis Frederick, who along with Tyron Smith and Zack Martin could/should be making a trip to Hawaii. “He does a tremendous job at it, and we’re really glad to have him.”
Free is in his eighth year with the Cowboys, a fourth-round draft pick in 2007. Only Witten, Romo and L.P. Ladouceur have longer tenures with the Cowboys than Free.
“I’m not super old, but I’m definitely one of the older guys,” said Free, who turns 31 next month. “Kinda feel like I fill that role to some extent.”
But bigger than any of this is a simple fact.
Dallas lost Parnell and the OL got better. Much better.
They lost Free and the OL swan dived.
La'el Collins wasn't anywhere near as good or consistent as Doug Free.
And leadership had to be transferred to Frederick himself because Tyron is not a vocal guy.