I'm putting my money on Lemon. I'm assuming they'll hope his chemistry with his guests on Celebrity Juice will be enough for it to succeed. I can't see Walliams being a good choice. There would only be so many times he could get away with a camped-up "ooh doesn't that sound dirty" ritual.
Stephen Mulhern 1/2 he is too chirpy
Keith Lemon 4/1 hope not!
Bradley Walsh 5/1 busy enough with his two quiz shows?
David Walliams 6/1 maybe....
Greg Scott 10/1 we wish
Sean Fletcher 25/1 bit bland
Alastair Stewart 50/1 haha I would love to see this!!
The Ghost of Les Dawson 100/1 maybe they will do the hologram again
Ben Shephard 2000/1
Much depends on the panel. If its the usual rent a zeleb they need a comedian in charge but if they look to get the comedy from the panel they will probably play it safe.