"I think they want somebody who can challenge her tennis IQ, and there are very few people who can do that," says one person with knowledge of the family.A carousel of coachesNigel Sears left the scene after Raducanu's run to the fourth round of Wimbledon last year, and Andrew Richardson was given a contract until the end of the US Open, which ultimately was not extended despite that unforgettable triumph in September. แมนยูล่าสุด