Burns was reassigned to minor-league camp Thursday.
Burns signed a minor-league contract with the Yankees, Brandon Warne of ZoneCoverage.com reports.
Burns has cleared waivers and was outrighted to Triple-A Omaha on Sunday. He is expected to return to the major league camp.
Burns was designated for assignment by the Royals on Wednesday.
Burns is competing with Paulo Orlando for the Royals' starting center field job this spring, the Kansas City Star reports.
Burns was optioned to Triple-A Omaha on Saturday.
Burns was recalled from Triple-A Omaha on Monday, Joel Goldberg of Fox Sports Kansas City reports.
Burns was optioned to Triple-A Omaha on Wednesday, Rustin Dodd of The Kansas City Star reports.
Burns was recalled from Triple-A Omaha prior to Saturday's game.
Burns (thumb) was activated from the 7-day disabled list Sunday, Rustin Dodd of The Kansas City Star reports.