The Cowboys have signed punter Chris Jones to an four-year extension through 2021, according to ESPN.com’s Todd Archer (on Twitter). Jones was set to be an unrestricted free agent after the 2017 season. 
The four-year extension is worth $8.7MM, Ian Rapoport of NFL.com (on Twitter) hears. That includes $4.5MM guaranteed.
Jones averaged 45.9 yards per punt in 2016, which is roughly in line with his career average. As noted by Kristi Scales of the Dallas Morning News, the veteran has the team’s’ all-time highest percentage of punts downed inside the 20 with 39.9% (113 of 283). Teams will only go so far to lock down special teams players, but the Cowboys felt the need to lock down Jones at a reasonable cost for years to come.
Jones has been with the Cowboys since 2011 when he filled in for Mat McBriar. However, non-Cowboys fans may remember him best for his crushing tackle on Lions punt returner Andre Roberts last year.