Ole JJ is not exactly setting the world on fire with the Vikings. Fall camp hasn't started, so it's still very early, but JJ is taking 3rd string reps right now behind Darnold and Mullens. But a top 10 draft pick should be at 2nd string on day 1 and with multiple reporters indicating he looks lost is not a good sign.
There's few places worse in the Sports world than being an NFL team without a franchise QB. It's going to take the Vikings probably 3 years before they can cut him and then they'll be back looking for another QB.
https://www.si.com/nfl/j-j-mccarthy-vikings-depth-chart-sam-darnold