Hickey, 23, had 26 points in 76 regular-season games with the Manchester Monarchs of the American Hockey League last season. His plus-16 rating led the team. Hickey served as a captain for Team Canada when it won the gold medal at the 2009 World Junior Championship. He was selected in the first-round (No. 4) of the 2007 NHL Draft.
Legein, 23, recorded 14 goals and 11 assists in 63 regular-season games with the Monarchs last season. Five of his goals were shorthanded. Legin was selected by the Columbus Blue Jackets in the second-round (No. 37) of the 2007 NHL Draft and acquired in a trade with the Philadelphia Flyers.
Meckler, 25, recorded 10 goals, seven assists and a plus-10 rating in 44 regular-season games with the Monarchs in his fifth season in Manchester. Meckler was selected by the Kings in the fifth-round (No. 134) of the 2006 NHL Draft.
Muzzin, 23, established career highs in goals (seven), assists (24), points (31), penalty minutes (40) and games played (71) for the Monarchs last season. He was selected by the Pittsburgh Penguins in the fifth-round (No. 141) of the 2007 NHL Draft and signed by the Kings as an unrestricted free agent on Jan. 4, 2010.