Unbeaten colt Luxembourg has shown Aidan O'Brien a "good sign" ahead of a tilt at the 2000 Guineas.
The Ballydoyle trainer is aiming the three-time winner at the Newmarket Classic on April 30. Favourite at 5-2 in William Hill's ante-post betting market for the Derby, the son of 2012 hero Camelot was last seen on the track in October.
After a successful summer debut at the Curragh, he stepped up to Group 2 level in September and rounded off his season with a length-and-three-quarters supremacy in the Vertem Futurity Trophy. The Group 1 has produced five Derby scorers, however O'Brien believes his classy three-year-old will not be inconvenienced by remaining at a mile for his first Classic bid.
