Moore was listed No. 2 on the post-spring depth chart behind Jawanza Starling.
Moore will have to sit out a year before transferring to another FBS program. As a freshman, he's not eligible to take advantage of the NCAA waver that allows Trojans juniors and seniors to transfer to another program and be eligible to play this fall.
Moore is the third player to opt to transfer after the program was hit with NCAA sanctions, joining linebacker Jordan Campbell (Louisville) and defensive end Malik Jackson (Tennessee). Also, the Trojans released touted offensive lineman Seantrel Henderson from his scholarship commitment, and linebacker signee Glen Stanley reportedly also wants a release.