SYDNEY, AUSTRALIA - JANUARY 17: Matt de Boer poses during a Greater Western Sydney Giants AFL portrait session on January 17, 2017 in Sydney, Australia. (Photo by Mark Metcalfe/Getty Images)

Greater Western Sydney recruit Matt De Boer will be sidelined for six weeks due to a hamstring injury.

De Boer, who was delisted by the Dockers, before being thrown a lifeline by the Giants in the 2016 rookie draft, sustained the injury at training on Monday.

“Matt has contributed really well to our playing group throughout the pre-season,” GWS Head of Athletic Performance David Joyce said.

“This is obviously a disappointing setback for Matt but no doubt he’ll do his rehab very diligently to return to the field in the coming weeks.”