Like Bridgewater, the Vikings have not yet anointed Barr as a starter. But the hope inside Winter Park and the expectation outside is that Barr will line up on the field for the first defensive snap of 2014. Predicting exactly where he lines up could prove to be more difficult.

“I have this vision on how I want to use this guy and I don’t want to tell Green Bay, Chicago and Detroit,” Zimmer said. “I want to let them try and figure that out at some point.”

Zimmer said he has never coached a player who had a blend of size and speed like Barr, and the Vikings plan to use Barr as a strong-side linebacker in their 4-3 base defense with veteran Chad Greenway filling one of the two other linebacker spots.

Zimmer hinted that Barr’s role could be similar to how the Broncos use outside linebacker Von Miller, the 2011 NFL Defensive Rookie of the Year who has 35 sacks in 40 career games. Miller is a 4-3 outside linebacker who often lines up as an edge rusher on passing downs and uses his flexibility to bend around offensive tackles and his speed to take down the quarterback. Miller also drops into coverage at times, something Barr will also do.

And while Barr played linebacker for only two years at UCLA, CBS Sports draft analyst Dane Brugler thinks that athleticism makes him worth the risk.