Although Ryan has used his redshirt he could have three more years of eligibility remaining as he is using family hardship withdrawal. He could be back as early as the spring semester in January.
"He has a rare blood type, finding a match has been very difficult," close family friend Ron Andrade told the Tucson Citizen. "They have been waiting this whole time. They were told not to be further than an hour away from UCLA in case they got called."
O'Hara was the No. 2 quarterback for the NAU game, but did not play as starter Kris Heavner received all the snaps. O'Hara started one game last season, but was moved to wide receiver by the end of the season. He returned to quarterback in the spring and out-dueled Richard Kovalcheck and Nic Costa to be named Heavner's back up.
Kovalcheck, a redshirt freshman who has never taken a collegiate snap, will now serve as Heavner's primary back-up. Costa, who is being used as a utility player, has already taken two snaps this season. He started three games a year ago and played in all 12 last season.
Arizona hosts Utah on Saturday. Both teams are 1-0.