Jockey Mick Kinane, who announced his five-year partnership with trainer Aidan O'Brien and Ballydoyle has ended, said he will move to John Oxx's stable as lead rider next season.In the Irish jockey merry-go-round, Jamie Spencer, 23, was named to replace Kinane for Ballydoyle. Spencer captured a Classic for O'Brien aboard Brian Boru in this year's St Leger.Kinane, 44, who won his 13th Irish championship at Leopardstown Saturday, will take over from Johnny Murtagh for The Curragh conditioner."I had an agreement with John for two seasons a while back and I've always looked on him as someone I would like to work with again," Kinane told The Racing Post. "I'm greatly looking forward to riding for him once more and I'm eagerly looking forward to the start of next season."After injuring his back at Royal Ascot, Murtagh has been battling weight problems that limited his effectiveness in recent months.Murtagh plans to freelance next season."The consequence was that we had to think about what we were going to do for next year and Mick Kinane became available at an opportune moment," Oxx said. "He's in great shape and has had a fantastic year riding winners up and down the country for everybody. He's also been riding fantastically well."