The John Gosden-trained Romsdal has been included as a late entry for the Derby at a cost of £75,000.
Last month the three-year-old colt was beaten by Aidan O'Brien's Orchestra in the Chester Vase and Gosden decided over the weekend to supplement the horse for the Epsom Classic.
Australia and Orchestra are among four O'Brien entries for Saturday's race.
Australia and Orchestra will be joined by stable-mates Geoffrey Chaucer and Kingfisher.
Newmarket trainer Gosden also has unbeaten Sandown Classic Trial winner Western Hymn in the field, and will allow jockey William Buick to chose his preferred mount, with Richard Hughes ready to ride whichever horse remains.
Derby entries at confirmation stage: Impulsive Moment (trainer, A Balding), Arod (P Chapple-Hyam), Australia (A P O'Brien), Ebanoran (John Oxx), Geoffrey Chaucer (A P O'Brien), Kingfisher (A P O'Brien), Orchestra (A P O'Brien), Pinzolo (C Appleby), Snow Sky (Sir M Stoute), Sudden Wonder (C Appleby), True Story (S Bin Suroor), Western Hymn (J Gosden), Fascinating Rock (D K Weld), Kingston Hill (R Varian), Red Galileo (E Dunlop), Our Channel (W Haggas), Romsdal (J Gosden)