Add Marcus Gilbert to the growing list of opt outs. The Cardinals tackle has decided against playing in 2020, as Adam Schefter of ESPN.com tweets. 
The Cardinals acquired Gilbert from the Steelers via trade in 2019, with the intention of installing him as their starting right tackle. Unfortunately, a knee injury forced Gilbert to injured reserve in early September. Gilbert has yet to play a down for the Cardinals, and his next opportunity to suit up won’t come until 2021. The veteran lineman appeared in just 12 total games from 2017-18 and he hasn’t played a full 16-game slate since 2015.
With Gilbert off the roster, the Cardinals could turn to Justin Murray or third-round rookie Josh Jones as their new first-string RT. Whoever wins that competition will play opposite of D.J. Humphries on the front line.
As of this writing, Gilbert is the 52nd player to opt out. NFL players have until Thursday afternoon to make the call, after which point the decision is irrevocable.
What about Beachum? While nothing special, he’s chock full of experience and was at least serviceable for the Jets. I’m not sure Arizona should immediately throw Jones in the fire given the abbreviated offseason