The deal in which England's National Stud purchased millionaire Mutamam from Sheikh Hamdan is off because of health reasons pertaining to the 6-year-old son of Darshaan.Following his arrival from New York this fall, Mutamam was found to be suffering from Klebsiella. Caused by bacteria, Klebsiella can be contacted from contaminated bedding. In this case, it infected his genitalia. Mutamam, who was produced from the Caerleon mare Petal Girl, instead will be retained by Sheikh Hamdan to stand at the National Stud near Newmarket for a fee of £6,000. Mutamam is undergoing treatment and is expected to be ready for the start of the 2002 breeding season.