"Coach Mora is an incredible coach. I know you're never supposed to go to a school for a coach because they could be out of there the next day, but he definitely had a lot to do with my decision," said Rosen.
Rosen said Mora has been his personal recruiter throughout the process and is counting the days until Mora's his coach. He said he is "really excited to just get over there."
While football obviously was the main draw to UCLA for Rosen, he says the school's academics are another strong point that went into his choice.
"UCLA is a great school, it obviously had the reputation that it does with the Anderson School of Business. I'll possibly try to get a Masters Degree from there," said Rosen. "But UCLA speaks for itself on and off the field."
|Rosen with Mora|
"I think it's huge. At first I was trying to get away a little bit. But the more I think about it, it makes sense to represent for your hometown and bring the Pac-12 and UCLA back to some prominence," said Rosen.
While Rosen wants to stay close to home for now, he says he wants to travel cross-country after he has a degree in his hand.
"Forbes just ranked UCLA as the tenth-most, world-wide recognizable university and it's an incredible school and ultimately I'd love to end up on the east coast and work there. I think UCLA will definitely help me out there," said Rosen.
Across town, Ventura (Calif.) St. Bonaventure five-star quarterback Ricky Town has committed to rival USC. And as rivalry in Los Angeles continues to build, Rosen says it continues to motivate him on the field.
"We're really good buddies off the field. We really like to go to events and see how everyone stacks up on the field and of course we try to come out on top. Ultimately we're just trying to have fun," said Rosen.
There is still a year until the two potentially face off, and until then Rosen has been planning out his game strategy.
"Just want to get my mind as ready as it possible can be," said Rosen. "My OC (offensive coordinator) is a film rat and he and I just relate and we like to beat people with our minds rather than just going deep and chucking it 70 yards and hoping it works out. I'd love to be able to beat people with my mind rather than with my arm."
Besides working on his mind, Rosen wants to work on his body as well. Currently 6-foot-4 and 206 lbs., he hopes to get up to 215 lbs. come fall.