Thompson announced his retirement from the NHL Wednesday.

Los Angeles released Thompson from his professional tryout agreement Tuesday.

Thompson signed a professional tryout agreement with the Kings on Tuesday, per CapFriendly.

Thompson (lower body) will be back in the lineup against the Sabres on Saturday, Jordan Hall of NBC Sports Philadelphia reports.

Thompson (lower body) won't be available for Wednesday's game versus the Rangers.

Thompson (shoulder) is on track to be activated off injured reserve and return to the lineup Saturday against the Maple Leafs.

Thompson (shoulder) is expected to play again this season, Jordan Hall of NBC Sports Philadelphia reports, though the team hasn't provided a specific return date.

Thompson (shoulder) was placed on injured reserve Wednesday, per CapFriendly.

Thompson underwent shoulder surgery Tuesday and is expected to be out long term, Bill Meltzer of NHL.com reports.