Trained by Marcus Tregoning, the Showcasing colt was a taking victor in the Group Two at Newbury last month.
Owner Hamdan Al Maktoum already had the Owen Burrows-trained Albasheer, runner-up in the Champagne Stakes, engaged, but connections have opted to further strengthen their hand.
Tregoning said: “He runs on Saturday and I’ve been very happy with him since Newbury.
“Obviously we don’t know what the ground is going to be like yet, and we don’t know how many of the Irish horses are coming over.
“Most Showcasings go on soft ground anyway and as he’s in good form, we thought we had to go for it.
“It’s been a while since I won the Dewhurst (with Sir Percy) in 2005, but we’ve had nothing good enough to run in it since. Hopefully this is a good horse, he’s looked it so far.
“The fact Sheikh Hamdan had another horse already entered didn’t come into the reckoning really.”
Joseph O’Brien’s Thunder Moon, who made a splash when winning the National Stakes in good style, is one of three possibles for Joseph O’Brien along with Snapraeterea and State Of Rest.
His father, Aidan, has left in Royal Ascot winner Battleground, a late defector from the National Stakes, Wembley, who was second in the National, and St Mark’s Basilica, who was due to run in France on Sunday but was caught up in the contaminated food situation.
Richard Hannon hailed a piece of work completed last week by one of his big-race hopes, Chindit ,as “one of the best for a lot of years" on his Herridge gallops.
Hannon sends two unbeaten colts to Newmarket this weekend, with Solario Stakes scorer Etonian set to join Champagne Stakes winner Chindit on the Rowley Mile.
Pat Dobbs had the choice of mount and will partner the latter – who heads Coral’s market at 5-2 ahead of the Joseph O’Brien-trained Thunder Moon at 11-4 – with Tom Marquand taking the ride on Etonian.
Watch the full interview as Richard Hannon tells Unibet the latest on his Dewhurst contenders
“On Thursday morning Chindit did an extremely good piece of work, probably one of the best pieces of work we have seen at Herridge for a lot of years,” Hannon told Unibet.
“We are hopeful that both will run very well, but I think Pat Dobbs was particularly pleased with Chindit and he had the choice of rides.
“On Tuesday morning Etonian did a very nice piece of work. He has never been that much of a showy horse, but he worked well and he is on target for the Dewhurst. Tom Marquand is going to ride.”
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