(Photo by Ryan Remiorz/AP via NPR)

Michael Phelps announced his comeback at the Arena Grand Prix in Mesa, Arizona.

Arizona State University swimming is getting a new coach: Michael Phelps.

Phelps will be joining his, and the school’s new coach in a volunteer capacity. Jeff Metcalfe is a reporter for the Arizona Republic and azcentral sports. He covers the Olympics and has been writing about the Olympic’s most decorated athlete coming to the Valley.