That was fast. Two days after signing Ethan Westbrooks, the 49ers have released the defensive lineman, Ian Rapoport of NFL.com tweets. 
It’s not clear why the Niners have reversed course so quickly, but this sort of thing usually happens when players are flagged on their physicals. Soon, we’ll probably hear more on why the NFC champs dropped him.
Westbrooks saw a good amount of playing time for the Rams during his five seasons. In 2017, he saw snaps at multiple DL spots and notched four sacks in 16 games, which included nine starts.
Last year, Westbrooks signed an offseason deal with the Raiders but did not survive final cuts. He didn’t hook on elsewhere after that, leaving him out of football in 2019.
The Niners will turn their attention to more pressing matters on the defensive line, starting with Arik Armstead‘s impending free agency.
What was the point of even signing him if they knew he might be injured?