Lee, 26, appeared in 16 games for Cleveland last season, seeing just 73 snaps on defense while logging a whopping 85% of the special teams snaps for the Browns. The latter is where he'll help Kansas City.

Lee was initially promoted from San Francisco's practice squad following Kwon Alexander's trip to injured reserve last year, logging 240 special teams snaps across 11 appearances from Week 10 on. He'll challenge Jason Cabinda and Steve Longa for a similar role in Detroit.

Lee racked up 65 total tackles in 2018 while starting just six games that season, but the linebacker still began 2019 on the practice squad after the team replenished its linebacker depth. The 24-year-old will be a restricted free agent this upcoming offseason, but the 49ers may let him walk with a healthy amount of linebackers under contract and not a lot of cap space to play with. Lee could surface as a deep IDP candidate based on his strong tackle totals in 2018 if he ends up in a scenario where he can see significant defensive snaps next year.