Knight put pen to paper on a one-year contract with Barys Nur-Sultan (KHL) on Tuesday.
The Flyers reassigned Knight to AHL Lehigh Valley on Sunday.
Knight has three assists with a plus-2 rating in the last three games.
Knight scored his team's first goal in Thursday's 3-1 win over Chicago.
The Flyers recalled Knight from AHL Lehigh Valley on Saturday, Adam Kimelman of NHL.com reports.
The Kings placed Knight on waivers Saturday,
Knight (collarbone) skated in a regular sweater at Friday's practice session, Adam Kimelman of NHL.com reports.
Knight (collarbone) took the ice in a non-contact jersey at the Flyers' practice session Monday, Bill Meltzer of NHL.com reports.
Knight (collarbone) is scheduled to meet with a doctor Friday, but there currently is no timetable for his return, Sam Carchidi of The Philadelphia Inquirer reports.
Knight (collar bone) is expected to be cleared to return to practice after meeting with Philadelphia's team doctor on Jan. 17.