Derryck Thornton leaving USC as grad transfer TrojanInSF Points Member Joined: Sep 10, 2017 Messages: 768 Likes Received: 811 May 10, 2019 #1 Per ESPN: http://www.espn.com/mens-college-basketball/story/_/id/26717141/sources-thornton-leave-usc-grad-transfer Very interesting. Can't say I'm surprised. Wonder if it's 100% his choice or if he persuaded to seek options elsewhere. First shoe to drop to get Boogie Ellis in the fold? USC15 likes this.