Connections have been heartened by current ground conditions and how the colt has come out of the Irish 2000 Guineas nine days ago when he was second to Henrythenavigator.
Trainer Jim Bolger had indicated at a media event in April that he was leaning away from the Derby for last season’s champion two-year-old.
However, he remains among a field of 18 at the confirmation stage and is set to line-up as long as the ground gets no quicker than good.
John Ferguson, bloodstock advisor to Sheikh Mohammed, whose wife Princess Haya of Jordan owns the horse said: “I received a phone call from Jim Bolger saying that New Approach was in exceptional form and had come out of the Irish 2000 Guineas really well.
“He recommended that if the ground was suitable that the horse take his chance in the Derby.
“I passed the message on to Sheikh Mohammed who agrees that as long as the horse is 100% and the ground is suitable the horse will run. It’s very exciting.”
Epsom clerk of the course The going yesterday was officially described as good to soft and although yesterday started dry, rain was expected later and overnight with the forecast for rain ranges from six millimetres to up to an inch.
New Approach is a 6-1 chance with Ladbrokes and 7s with the Betfair betting exchange, who report some extraordinary trading with one punter having £27.50 at odds of 209-1.
Ante-post backers of current favourite Casual Conquest were able to breathe a sigh of relief as Dermot Weld’s colt was supplemented.
Owners Moyglare Stud forked out the £75,000 to get the son of Hernando into the Classic and the news came as no great surprise.
Casual Conquest has only raced twice in his life but made a massive impression when bolting up in the Derrinstown Stud Derby Trial Stakes early last month.
Stan Cosgrove, the stud’s manager, said: “The money has been paid and I think he has a very good chance.”
Chester Vase winner Doctor Fremantle, trained by Sir Michael Stoute, and French 2000 Guineas third River Proud from Paul Cole’s stable are the other two supplementary entries.
Stoute is likely to have three runners in his bid to win the race for a fifth time as he has left in Dante winner Tartan Bearer and Dee Stakes victor Tajaaweed.
Aidan O’Brien has taken out dual 2000 Guineas winner Henrythenavigator but still has a team of five led by Dante runner-up Frozen Fire. His others are Alessandro Volta, Bashkirov, King Of Rome and Washington Irving.
Leading fancy Curtain Call stands his ground for dual Derby-winning trainer Luca Cumani, Godolphin rely on Rio De La Plata and trainer Henry Cecil, with four Derby triumphs to his credit, is banking on Kandahar Run.
Vodafone Derby, Ladbrokes bet: 3-1 Casual Conquest, 4-1 Curtain Call, 6-1 New Approach, Tajaaweed, 7-1 Tartan Bearer, 8-1 Doctor Fremantle, 14-1 Rio De La Plata, Frozen Fire, 20-1 Kandahar Run, King Of Rome, 25-1 Alessandro Volta, Bronze Cannon, 33-1 bar.