According to FoxSports.com, Olsen has been suspended for at least one game due to a failed drug test.
Olsen came to Miami as one of the nation's top quarterback recruits two years ago. The younger brother of former UM tight end Greg Olsen, Kevin redshirted last season and was expected to backup Ryan Williams this fall.
Olsen became the team's starter after Williams was injured halfway through the spring. He will now miss at least the Louisville game.