Arizona has filled its remaining coaching vacancy and hired a new secondary coach, reports the Arizona Daily Star,  Tucson Citizen and others. 

Ryan Walters was officially promoted from within by Head Coach Mike Stoops from a graduate assistant position.  Walters took over as the secondary coach for Arizona while the team prepared for the Alamo Bowl after Greg Brown left Arizona for Colorado in December. 

The most striking aspect of the hire is Walters' age; he is 25. His age is particularly concerning, given that Walters was given the opportunity to fill the role only after Duane Akina ended his fortnight on the job and returned to Texas.  Akina is a former Arizona coach from the Tomey-era, and his hiring was considered a major addition to Stoops' staff this off-season based on his decades of experience coaching and developing top talent in the defensive backfield.

Walters will have a wealth of talent to work with this upcoming season, as Adam Hall, Robert Golden, Trevin Wade, Shaquille Richardson, and Marquis Flowers all return. 

The returning talent, as well as Walters' familiarity with the players and coaches should hopefully make the transition easier.