"I just committed today," Austin said Monday night.
The Bishop Amat product hasn't visited since the summer but decided now was the right time to join the fold.
"I just took some time to talk it over with my family," Austin explained. "I just feel like I have a great opportunity at Arizona. It's a great school. I love the campus and the coaches are great."
Arizona had been on Austin early in the process when they were looking at him mainly as an offensive lineman. Conversations between the 6-4, 245 pounder and the Cats quieted a bit, but recently coach Darrell Wyatt began talking to him more and more about playing on the defensive side of the ball.
That seemed to be music to his ears.
"They started talking to me more as a defensive lineman, that's why I jumped on it," Austin said of the Wildcat offer.
"I'm looking forward to the big campus experience," Austin said. "I can't wait to play in front of a big crowd and hear all the cheers.
"I know I'll have so much fun at Arizona," Austin added.
He took an unofficial over the summer and is working with the UA coaches on taking his official visit in December.
He mentioned that he has enjoyed his interaction with Coach Wyatt and looks forward to talking with him, and the rest of the staff some more.
"Coach Wyatt is a great guy," Austin said. "We have a good relationship and I bet we'll have a better one when we talk even more."
Coincidentally enough, Austin played against current Wildcat freshman Nicholas Grigsby in high school.
"He went to my rival," Austin explained. "That'll be interesting."
Right now Austin feels like he can get a little faster and add strength. He also can't wait to get coached by the Wildcat staff.
"I bet I will learn better technique when I get there," He concluded. "Of course I'll try to get better on my own before I get there as well."