The 27-year Senegal international has agreed a four-year deal with the Black Cats after spending four seasons at the Reebok Stadium.
Diouf becomes Keane´s fifth signing of the summer following the arrivals of Teemu Tainio, Nick Colgan, David Meyler and Pascal Chimbonda.
Copyright (c) PA Sport 2008, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms