FILE-In this Friday, Oct. 10, 2014 file photo, Brazil's Kaka waves as he arrives for a training session ahead of a friendly match against Argentina at the Bird's Nest National Stadium in Beijing, China. Former Ballon d'Or winner Kaka says he is retiring from soccer at age 35, it was reported on Sunday, Dec. 17, 2017. (AP Photo/Ng Han Guan, File)
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