The Senegalese international must await clearance before completing the move and arrives at the Keepmoat Stadium amidst somewhat of a forward crisis.
James Hayter was the only recognised front-man in Saturday’s 1-1 draw with Coventry with Billy Sharp missing due to a family problem and Chris Brown still struggling with a knee injury. They are also without Jon Parkin who has returned to Cardiff City following a loan spell at the club.
Diouf, who has also played Premier League football with Bolton, Blackburn and Sunderland, was heavily linked with West Ham after striker John Carew posted a picture of the controversial striker training with the Hammers. However after manager Sam Allardyce dropped his interest Donny were quick to pounce and will be hoping to get the best out of a player whose obvious on-the-pitch ability has been overshadowed by a number of past controversies.
From spitting rows to alleged racial abuse of ballboys Diouf has never been far from the spotlight but Dean Saunders will be hoping the 30-year-old has put this chequered past behind him to help fire his ailing side out of the Championship drop zone.