8-1 joint-favourite with the sponsors, will miss the Betfred Cambridgeshire on September 24 after meeting with a training setback.
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Trained by Roger Varian, the son of Shirocco was an emphatic winner of a Haydock maiden in May before finishing fourth to subsequent King George winner Nathaniel in the Group 2 King Edward VII Stakes at Royal Ascot the following month.
The progressive three-year-old chased home Fulgur in an 18-runner handicap at Newmarket on his last start and looked an ideal candidate for the 1m1f heritage handicap before injury struck.
"Mijhaar has suffered a training setback and won't be running in the Cambridgeshire," said Varian on Monday. "It's too early to say whether he will run again this year."