According to a press release from the Royals, they've signed six players to minor league deals: pitchers Bruce Chen, Adam Bostick, Devon Lowery, and Francisco Rosario, as well as first baseman Ernesto Mejia and catcher Vance Wilson.
Chen, 32, posted a 5.78 ERA, 6.5 K/9, and 3.6 BB/9 in 62.3 innings for the Royals this year. Wilson, 37 in March, hit .270/.342/.461 in 229 Double A plate appearances this year. He seems all the way back from Tommy John surgery and might warrant another look as an MLB backup.