The 32-year-old winger has a lower-back injury, according to Jackets president of hockey ops John Davidson.
Injuries limited Clarkson, whose contract is insured, to just 23 games (2G, 2A) for the Jackets last season. He was traded to Columbus from Toronto in February of last year, in return for injured winger Nathan Horton (whose contract is not insured and who hasn’t played an NHL game in over two years).
Clarkson is signed through 2019-20 for a cap hit of $5.25 million, and the way his contract is structured makes it practically buyout-proof. But if cap relief is required, the Jackets may now be able to place him on long-term injured reserve.
When, or if, he’ll be able to play again remains to be seen.