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The five-star quarterback said Saturday at the Pylon Sports 7on7 here that his Michigan unofficial visit the last few days was phenomenal, just killer, but he's still leaning toward another decision on March 20 when he makes his commitment.
It's no secret at all that UCLA is the frontrunner in his recruitment.
It's also no surprise now that the Ann Arbor trip was a memorable one.
"It was awesome," Rosen said. "I was sort of hoping to go there and not like it and have my decision cut out but definitely coach (Doug) Nuss(meier) and coach (Brady) Hoke made it a lot harder. Ultimately, I had fun going there and it was a good experience.
"The visit was a no-strings-attached kind of thing, just get out there, I told them my intentions. I'm terrible at keeping my cards close to my chest. They just wanted to show me what Michigan was all about and they definitely did a good job."
Nussmeier, who came to Michigan from Alabama this off-season to be offensive coordinator and quarterbacks coach, worked hard on Rosen, the top-rated quarterback and the No. 2 overall prospect by Rivals.com. It worked.
The top offensive performer at the Pylon 7on7 Saturday, Rosen said Nussmeier gave him the spiel and it was definitely persuasive.
"Coach Nuss is a very convincing guy," Rosen said. "He talked about the pro-style versus the spread offense and how my skill set would fit in one versus the other. He took me to The Big House and there were a lot of academic meetings and there is a great support staff at that school.
"I'm going to step back and think a little bit. I'm pretty positive, I'm pretty sure I'm going to stick with who I originally thought of, but it makes the decision harder."
Rosen's decision is slated for Thursday at his school and the five-star quarterback said it's still on, still a go despite his awesome Michigan experience.
The Bellflower (Calif.) St. John Bosco standout who led his team to the state title in his junior season said his intention was to visit at least one school out-of-state, hope to dislike it to reinforce his probable decision with UCLA and feel great about his choice.
That plan did not necessarily backfire but Michigan wowed Rosen - even if the Wolverines don't land his pledge.
"I wanted to get out-of-state at least once and just be able to tell people I went out-of-state, the school I'm going to is completely justified, I just wanted to go there just to get out of California and be like I don't like it I'm going to stay in California and do my thing," Rosen said.
"But ultimately it didn't really end up like that. It was a lot better visit than I thought it would be."
Word from Ann Arbor to Westwood traveled quickly. Rosen said numerous UCLA players have already contacted him urging him to still pick the Bruins, reinforcing all the reasons why the five-star likes the Bruins so much in the first place.
"Like five UCLA players texted me this morning saying UCLA is a great place and all that stuff," Rosen said.
The five-star thought his decision would be easy. After seeing Michigan, not so much.
Adam Gorney is a West Region football recruiting analyst for Rivals.com. You can click here to follow him on Twitter.
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