Although the lineup for the Channel 5 reality show has not been officially announced, Clark already has odds of 3/1 of winning the series.
[Clark with X Factor mentor Nicole Scherzinger]
Clark made it through to the quarter finals of the ITV singing competition but bookmakers predict that he will emerge victorious from the Big Brother house.
According to Ladbrokes, he is in front of Ryan Moloney, famous for playing Toadfish in Neighbours, and jockey Frankie Dettori, who both have odds of 5/1.
Former EastEnders star Gillian Taylforth, Coronation Street's Sam Robertson and Steps singer Claire Richards follow them with odds of 8/1.
[Neighbours star Ryan Maloney and Steps singer Claire Richards]
The current odds for the winner of Celebrity Big Brother 2013 are as follows:
Rylan Clark 3/1
Ryan Moloney (Toadie) / Frankie Dettori 5/1
Gillian Taylforth / Sam Robertson / Claire Richards 8/1
Tricia Penrose 10/1
Lacey Banghard 12/1
Heidi Montag / Spencer Pratt 14/1
Paula Hamilton / Jim Davidson 20/1
Celebrity Big Brother 2013 launches on Channel 5 on Thursday, January 3 at 9pm.