With too many outfielders and a full 40-man roster, the Rockies have designated corner outfielder Matt Murton for assignment. While no future star, Matt Murton is a nice player who can hit for average, take a walk, avoid strikeouts, hit the ball in the gaps, and play an average to slighly above average corner outfield. A right-handed hitter, he has mashed LHP (career: 306/374/483, 857 OPS) while holding his own against RHP (career: 276/340/412, 752 OPS). Only 27, he is under club control for four more years (although he may qualify for arbitration next year as a Super 2). There is not a lot of upside, but with regular playing time, he could be a league average (~2.0 WAR) player -- maybe a little more with an age 27-29 peak bump -- for near the league minimum. At the very least, he would make a very good fourth outfielder, especially for a team with two left-handed hitters starting in the corners (like say David DeJesus and Mark Teahen). And yes, a right-handed (and cheaper) Mark Teahen is a fair comparison.
This would be a little move, but one that could push the Royals back in a positive direction at little cost.