In order to clear room on the 40-man roster, the Royals have designated left handed reliever Dusty Hughes for assignment. Hughes has been decent in his brief tenure in the Majors. In parts of two seasons he's totaled 70.1 innings with a 4.09 ERA though his 4.28 FIP and certainly his 5.18 xFIP suggest he's been at least a little on the lucky side. Hughes hasn't demonstrated a clear platoon advantage against lefties in his Major League career and therefor is unlikely to find a spot with another team as a LOOGY.
It's not a sure thing, but my guess would be that Hughes will end up accepting the assignment and pitch at AAA until an opening comes about in 2011. I had him as a member of the Royals opening day bullpen and I'm not 100% certain who will be replacing him yet. We'll let that sort itself out as we get closer to opening day.