Arroyo was the running backs coach at OSU in 2015-16 before taking the offensive coordinator job at Oregon. He was hired at UNLV in mid-December.
Arroyo also had pursued OSU defensive line coach Joe Bob Clements for a coordinator position, though nothing came of it.
Keeping the OSU rumor mill spinning, reports continue to surface about programs showing interest in offensive coordinator Sean Gleeson.
Brett McMurphy of Stadium said multiple Power 5 schools were interested, though he did not name specific programs. Rutgers is the school most often connected to Gleeson because of his New Jersey ties.