If you configure Apllication Visibility & Control (AVC) from 7.4.x onwards you can do this.
Monitor -> Clients -> client MAC -> AVC statistics
This post will show you how to configure this feature some CLI commands to verify it
http://mrncciew.com/2013/03/28/configuring-avc-on-wlc-7-4/
HTH
Rasika
**** Pls rate all useful responses ****