With the start of free agency only a few weeks away, fans will likely focus on who the Cowboys can acquire.
But the bigger question is who can they retain?
New is nice. New can be beneficial. But any team that allows too many of its quality free agents to depart usually finds its attempts to improve in the offseason stunted.
Signing one's on is a top priority. Here's a look at one of the top five free agents the Cowboys need to keep on the roster. Find the rest at the end of this post.
No. 4 -- Joe Looney, C/G
2017 contribution: Not all the players a team needs to keep are starters.
Looney didn't start a game for the Cowboys last season. But he's a veteran presence in the offensive line who can step in at all three interior line positions. He's part of the team's Jumbo Package when it replaced a tight end with an extra lineman.
Looney accepts his role, is well-liked among his teammates and has a positive impact on the locker room, helping to keep things light.