Last year's winner Denman heads 13 entries for the Aon Chase at Newbury on Saturday.
The nine-year-old has not been seen in public since winning the Cheltenham Gold Cup after being treated for heart problems.
His possible rivals include The Queen's highly-promising chaser Barbers Shop, who is trained by Nicky Henderson, and Colin Tizzard's Joe Lively, winner of the Letheby & Christopher Chase at Cheltenham recently.
Jonjo O'Neill has put in both Albertas Run and Exotic Dancer while David Pipe can choose from his trio of An Accordion, Hennessy hero Madison Du Berlais and Or Noir De Somoza.
Charlie Mann's Air Force One, the Nigel Twiston-Davies-trained Imperial Commander, Peter Bowen's Snoopy Loopy, Henderson's Trabolgan and Niche Market from Bob Buckler's stable
