Dennis Gardeck is a RFA, hopefully someone like MIN, BUF, or CLE is intrigued by his 5 sacks in limited snaps and "rescues" him. Evan Weaver (2020 rookie Cal LB) is on the practice squad. They also have LB Tanner Vallejo, who's been primarily a WSTD but got more defensive snaps towards the end of the season, but he's a UFA. If somehow Watt, Allen, Gardeck, and one or both of Vallejo or Weaver are playing all at the same time then that would be a good defense. But don't count on more than 2 of them playing at the same time. Hopefully Gardeck, Vallejo, and Weaver all find shelter in greener pastures.
And, I imagine MSM talking heads will hop on the Cardinals hpye train. We know they love Murray. Narrative seems to be "Watt is high on Murray" and now people are trying to say he's better than Allen and Mayfield, who both won playoff games, as well as Rodgers at this stage of his career despite being literally just named MVP. I'm also convinced his real height is closer to 5'8 than the supposed 5'10. They also made excuses for him, like "Murray was banged up in the last game" and "a lot of their players were injured." I think he regresses.
As an OL enthusiast, let's check their depth chart- mostly sumos. Last year they usually had the trio of Justin Pugh, Mason Cole, and JR Sweezy manning the interior. Pugh has been a criminally underrated lineman- part of the excellent 2013 class (Fisher, Lane Johnson, Bakhtiari, etc.) but is past his prime and is a rumored cap casualty. Cole has been okay but not top-tier. Sweezy is a UFA and also aging. I expect them to focus on improving the OL this offseason. Probably more sumos but we'll wait and see. Jack Anderson would be a good fit, since he and Kingsbury overlapped in 2017 and 18, though I'd rather he go to a team with a White QB. The Cards drafted Georgia sumo center Lamont Gaillard in 2019. He got significant snaps when Cole was out so I imagine the DWFs are clamoring for him to take over. As I've stated, sumo centers are my least favorite. Georgia loves them, sad. Not too long ago they had Ben Jones and later David Andrews, both great NFL players. If he starts I would not be surprised, either way, I'm sure he figures to play a bigger role next year.