http://www.hudl.com/athlete/1675672/highlights/163590393/v2
As you can see in the film, he has an accurate arm. His arm strength is good. He buys time on plays with his feet, but keeps his eyes downfield.
His delivery is slower than what I like as you can see when he makes a decision on a receiver. This can be corrected. I'd actually recommend he watch and mimic the way Ty Detmer moved in the pocket. That will speed up his delivery by putting him in a similar position to how he likes to throw.
If things don't work out for Jaren at QB, he'd make a great bcb or slot wr. I'm very glad to have this kid no matter where he plays.