Thornwell shot nearly 38 percent from 3-point range as a rookie, but his minutes and numbers went down in his second season. He played just five minutes per night last year, averaging one point per contest.
He spent four seasons at South Carolina. He was the SEC Player of the Year as a senior when he averaged 21.4 points, 7.1 rebounds and 2.8 assists per game. Thornwell shot 39 percent from 3-point range as a senior. He also made the SEC All-Defensive Team twice.
Thornwell is another young piece that head coach John Beilein can work with. He joins a backcourt that includes Collin Sexton, Darius Garland, Jordan Clarkson, Matthew Dellavedova, Brandon Knight and Kevin Porter Jr.