The Vikings' biggest defensive weakness is the pass rush.
Simeon Rice, an extremely good pass rusher in his day, is now available.
So he might still be too injured to play immediately. Keneche Udeze started every game last season and failed to get a single sack; I think a one-armed Simeon Rice might be able to top that.
Let's see Simeon Rice line up this season next to Kevin Williams and watch quarterbacks wilt in fear.