Harpur will miss the remainder of the 2023-24 season after undergoing pectoral surgery, Vince Z. Mercogliano of USA Today reports Monday.
The Rangers placed Harpur on waivers Friday, according to Elliotte Friedman of Sportsnet.
Harpur provided one shot and one hit across 17:07 of ice time in Sunday's 5-2 win over the Capitals.
Harpur inked a two-year extension with the Rangers on Thursday.
Harpur totaled two shots and two blocked shots in Thursday's 4-1 win over Montreal.
Harpur was recalled from AHL Hartford on Sunday, per CapFriendly.
Harpur was assigned to AHL Hartford on Saturday, per CapFriendly.
Harpur has been recalled from AHL Hartford on Saturday.
Harpur has signed a one-year contract with the Rangers.
Harpur was released from his professional tryout Sunday by Columbus.