Wang would have to be added to the Royals' 40-man roster, which is presently full. But the Royals could free up a spot by shifting left-hander Tim Collins to the 60-man disabled list. Collins learned last week he will need a second Tommy John surgery.
Duensing, 33, could be re-signed and then assigned to Triple-A Omaha, assuming he would take the assignment. He lives in Omaha.
Duensing also had a terrific camp, posting a 2.61 ERA in 10 appearances. He may attract interest from other teams looking for a veteran lefty in the bullpen.
Moylan struggled this spring, posting a 7.20 ERA in nine appearances. Barmes hit just .235.
Jeffrey Flanagan is a reporter for MLB.com. Follow him on Twitter at @FlannyMLB. This story was not subject to the approval of Major League Baseball or its clubs.