This situation reminds me a lot of DeAnthony Thomas from last year; a highly rated California prospect who's been committed to USC for a long time decides that he wants to take all five officials.
Jordan Payton (Santa Clarita, CA) is one of the top wide receivers in the country according to scout.com's early rankings; as a junior he caught 61 passes for over 900 yards and 10 TD's, despite missing two games. But unfortunately he's been a USC commit since last November.
However! He's decided to take some visits, and given that he grew up following Michigan (to some extent), it's very likely that the Wolverines will receive a visit. Michigan really needs a top WR in this class, as they lose some top talent from the roster after this season.
No date has been set up just yet, but it's certainly one to keep an eye on. Other schools looking at Payton include Florida, Oklahoma and California.