Readers and the model agree: DAL says no.
As a Cup contender, Dallas is giving up a 24-year-old, locked-in top-pair LD with a full NMC for a good but non-elite RFA winger and only a 2nd plus two 3rds; the return lacks a 1st-round pick or equivalent blue-chip asset and doesn’t adequately compensate for losing a foundational defenseman, so they likely walk unless the futures are upgraded significantly.
Columbus converts a strong but replaceable scoring winger and three non-premium picks into a long-term number-one LD in his mid-20s, fitting their push toward solidifying a playoff-caliber core despite the heavy cap and NMC commitment, so they probably accept this structure if Dallas surprisingly agrees.
Dallas Stars acquire Kirill Marchenko, a 2027 third-round pick (BOS), a 2027 third-round pick (WSH), and a 2029 second-round pick (CBJ) from the Columbus Blue Jackets in exchange for Thomas Harley.
Dallas moves a 24-year-old, $10.587M AAV, 7-year-remaining, full-NMC top-pair left defenseman for a 26-year-old 27-goal, 67-point RFA right wing and three mid-round picks, effectively swapping long-term cap certainty on defense for a scoring winger they can control as an RFA plus some modest draft capital while opening major cap space down the line.
Columbus pays a scoring winger entering RFA and three mid-round picks to lock in a young, prime-age, long-term number-one caliber left defenseman at a massive cap hit with full no-move protection, signaling a push toward contention by solidifying their blue line but assuming significant cap and flexibility risk for seven more years.
Value-wise this is light for a cost-controlled, 24-year-old top-pair defenseman on a huge but committed term, especially given the full NMC and the premium teams pay for that profile, so it skews in Columbus’s favor despite the cap risk. In the current market, Dallas would almost certainly demand either a higher-end asset (1st-rounder or better young player) or a second core piece on top of Marchenko and the mid-round picks to justify moving Harley and his prime years.