McQuillan, who has graduated from UConn after the spring semester, was arrested and charged with alleged assault in the second degree - -a felony -- and has had his court case continued until July.
McQuillan was initially barred from classes from the school following a disciplinary hearing. Diaco said earlier in the week that McQuillan was appealing the ruling. The appeal apparently was denied and he is no longer in school. McQuillan did have enough credits and is a graduate of the university. He still has one year of eligibility remaining and could theoretically transfer to any FBS school.
"We are without Sean McQuillan," Diaco said at the women's football 101 clinic on Friday in Storrs. "I just got that word. Sean will be a graduate of the university and move on."
This comes after a strong spring for McQuillan where he was the star of the spring game and was praised by the coaching staff for his leadership and performance. He was considered a potential captain of the team.
"Absolutely disappointed," Diaco said. "I wish him well and he will do well. He accomplished everything he needed to do to graduate."
McQuillan was arrested two weeks later after an alleged altercation with his roommate off campus and according to police inflicted substantial injuries to his victim.
McQullian caught 16 passes for 158 yards and one touchdown. For his career, McQuillan had 41 catches for 354 yards and two touchdowns.
Without McQuillan, rising sophomores Tommy Myers and Alec Bloom are the next in line on the depth chart. Diaco also said he is going to have to force feed some true freshman coming in.