OCTOBER 12: The Cowboys will follow through on the expected transaction. Vander Esch is heading to IR, McCarthy confirmed Thursday. Expected to be out at least a month with a neck strain, Vander Esch will rehab while off the team’s 53-man roster.

OCTOBER 9: Leighton Vander Esch‘s history with neck trouble affected him during his rookie-contract years in Dallas and impacted his potential for a lucrative extension. Months after re-signing with the team on a two-year deal, the veteran linebacker has run into another neck issue.

A collision with teammate Micah Parsons in the second half of the Cowboys’ loss to the 49ers is expected to lead to a Vander Esch absence. The Cowboys are likely to move the former first-round pick to IR, Mike McCarthy said Monday (via ESPN’s Todd Archer). Vander Esch is expected to miss four to six weeks with a neck strain, according to the Dallas Morning News’ Calvin Watkins.

An IR move would sideline Vander Esch until at least Week 11; the Cowboys have their bye in Week 6. Vander Esch, 27, saw neck injuries sidetrack his career. The first of those came in 2019, when the 2018 first-rounder missed seven games. He then missed three because of neck trouble last season.

The Cowboys gave Vander Esch a two-year, $8MM deal in March. He played the 2022 season on a one-year, $2MM pact. After a breakthrough rookie season, this did not appear the path Vander Esch’s career would go. The Boise State product soared to second-team All-Pro honors after a 140-tackle season that included two interceptions and seven passes defensed. Vander Esch played a lead role in Dallas rallying back to win the NFC East in 2018, but he fell off the extension radar due to injuries.

Dallas declined his fifth-year option in 2021, and while the parties have since agreed to two more contracts, neither checks in as an especially lucrative deal for the once-promising prospect. Still, Vander Esch rallied back in 2022 and logged his most defensive snaps (746) since his impact rookie year. While the Cowboys disbanded their multiyear LVE-Jaylon Smith pair two years ago, they have still kept the younger linebacker in their plans. For the time being, however, Vander Esch will drift out of the picture.

The team is looking into a veteran addition, per the Dallas Morning News’ Michael Gehlken. Dan Quinn also offered an interesting potential solution for a Vander Esch absence. The third-year Dallas DC said an extended hiatus could lead to Micah Parsons spending more time at linebacker, The Athletic’s Jon Machota tweets. Drafted as a linebacker, Parsons quickly graduated to pass-rushing star. The Cowboys have refrained from labeling the impact defender a pure defensive end, but Parsons spends most of his time rushing from the edge.

A move back to the second level would be an interesting development for this defense, given the value Parsons has generated up front. The Penn State product did play more ILB as a rookie, and the Cowboys will soon be thinner at that position. Dallas also is much deeper along its D-line, rostering the likes of Dorance Armstrong, Dante Fowler and Sam Williams as auxiliary edge rushers. Conversely, the team has an issue at linebacker.

Opting not to re-sign Anthony Barr, the Cowboys moved 2022 Day 3 draftee Damone Clark into their starting lineup. They drafted Demarvion Overshown in Round 3 but lost the rookie to a torn ACL this summer. The team waived Jabril Cox in August. Dallas rosters just one more ILB on its 53-man roster, second-year UDFA Markquese Bell. The team will need to add at that position soon.

In addition to Vander Esch’s setback, the Cowboys lost veteran special-teamer C.J. Goodwin — likely for the rest of the season. Goodwin suffered a torn pectoral muscle, Adam Schefter of ESPN.com tweets. The Cowboys re-signed Goodwin in March, giving him a veteran-minimum deal. Goodwin, 33, has been with the Cowboys since 2018.