He most recently played under contract to the Colorado Avalanche of the National Hockey League ( NHL ) .
Duncan Siemens ( born September 7 , 1993 ) a Canadian professional ice hockey defenceman who is currently an unrestricted free agent .
Duncan Siemens most recently played under contract to the Colorado Avalanche of the National Hockey League ( NHL ) .
Duncan Siemens ( born September 7 , 1993 ) a Canadian professional ice hockey defenceman who is currently an unrestricted free agent .