John Magnier of Coolmore Stud and Sir Alex Ferguson shared uncommon enjoyment together when Rock of Gibraltar was winning group I races one after another, but now the relation has taken a down turn over the champion racehorse's stallion career. Ferguson, who purchased a half-interest in Rock of Gibraltar when the son of Danehill was a 2-year-old, believes that the purchase entitles him to part of the income generated by Rock of Gibraltar at stud and has consulted lawyers to see the matter through, according to the Racing Post. Magnier declined the opportunity to deny speculation over the matter, saying "I really have no comment to make on this."Four-year-old Rock of Gibraltar, who was produced from Be My Guest mare Offshore Boom recently completed his first season at Coolmore in Ireland is getting ready for the upcoming season at Coolmore Australia, where his fee is A$120,000 (approximately $81,000). Rock of Gibraltar won seven group I stakes and ran second in the NetJets Breeders' Cup Mile (gr. IT) in his farewell race last fall.