"I decided on UCLA a few months ago," Rosen told us earlier. "I really fell in love with the coaching staff and everything about the school. I have a great relationship with (Head) Coach (Jim) Mora and (Quarterbacks Coach) Taylor Mazzone but I talk to every coach on the staff and I have a great comfort level with all of them.
"Coming from two Ivy League parents, education is big for me and UCLA has a great academic reputation as well. The campus is beautiful and I already know so many guys on the team or guys that are going there so I already feel a family atmosphere and chemistry with everyone."
From a football standpoint, Rosen said it was a perfect fit.
"The offense they run is basically the exact same thing we do at Bosco," Rosen said. "Obviously the terminology is different but the concepts are very similar. They run a balanced attack and allow the quarterback to make a lot of the reads and checks. UCLA throws the ball down the field and puts guys in positions to make a play.
"I'm excited to come in and compete for the starting job right away. That's my goal and I'm going to work as hard as I can to get in there and make an impact. I love competition, I think it makes you better. UCLA is definitely a program on the rise. When you look and see what Coach Mora has already done in just two years, I'm very excited to continue the success of the program and compete for national championships."
Rosen's development in the last year has been incredible. At this time a year ago, Fresno State was his only scholarship offer. He had a huge spring and summer and then went out and led his team to a perfect 15-0 season and a top -five national ranking.
Physically, Rosen has college tools right now. He has a great frame and will have no problems adding as much size as he needs. He looks all of 6-4 and should carry 230 pounds or so just fine. He has a quick, tight release, a very live arm but can also throw with touch and accuracy on all three levels -- short, intermediate and the deep ball.
He's an above-average athlete who can not only buy time in the pocket but run for first down yardage on designed running plays. He's a smart kid who understands the game and has improved his toughness over the last season as well.
UCLA actually had to come from behind to land Rosen. Early in the season, the quarterback said he wanted to get out of Southern California and was favoring Stanford and Cal. The Cardinal never offered but the Bears made a strong impression after a summer unofficial visit.
"UCLA grew on me as the season went along," Rosen said. "I got more familiar with the staff and learned more about the school. Plus they looked good on the field and I started to see myself in a UCLA uniform more and more. I was still open but UCLA is really the school that impressed me the most and the one school that had everything I was looking for.
"I had a great visit to Michigan last week and really loved it there. That's a fantastic university with so much tradition and a great academic reputation. I'm really glad I took the visit but, at that point, I already had my mind made up on UCLA and it was going to be pretty hard for anyone to pass them up.
"I'm very excited and ready to start recruiting. I've already been recruiting for the past few months and I think you're going to see UCLA finish up with a pretty nice recruiting class this year."