It would be unwise to bet against the moxie of Minnesota Vikings rookie quarterback J.J. McCarthy.

The 21-year-old quarterback out of Michigan emerged as one of the top quarterback prospects in the draft, winning over coaches and scouts with his character and showcasing he can make high-level throws at the combine.

The youngest first-round quarterback prospect selected this year, McCarthy has the most room for growth and showed he’s capable of growing as a passer throughout his undefeated 15-0 run to a national championship last season.

The kid is a winner, but that may not be enough for him to win the starting job in training camp.

Star Tribune beat reporter Ben Goessling gave McCarthy a 10% chance at becoming the Week 1 starter for the Vikings next season due to the steep requirements head coach Kevin O’Connell requires to run his offense.

“I think 10 [percent]… Kevin O’Connell does not want rookies on the field in this spot before they’re ready, because I think he has a pretty strong belief that these guys are going to be better off with time to learn, time to get all of the details, all of the footwork and where are my eyes and how am I stepping into throws and where am I dropping to… I don’t think he’s starting at the beginning of the season,” Goessling said April 30 on KFAN.

Goessling’s insight aligns with an ESPN report that McCarthy will be on an individualized development plan designed to not rush him into action.

“The Vikings will follow an individualized development plan they created for each of the quarterbacks they considered drafting, one that requires McCarthy to hit specific benchmarks and gives coach Kevin O’Connell full authority to make the timing decision,” ESPN’s Kevin Seifert wrote. “The approach is designed to avoid the worst-case scenario — ruining McCarthy’s career by exposing him before he is ready — and is a big reason the Vikings spent $10 million in March to sign veteran Sam Darnold as a bridge starter.”