PERTH, AUSTRALIA - MARCH 24: Ben Brown of the Kangaroos leads the team onto the field during the round one AFL match between the Fremantle Dockers and the North Melbourne Kangaroos at Optus Stadium on March 24, 2019 in Perth, Australia. (Photo by Paul Kane/Getty Images)

Star North Melbourne forward Ben Brown is set to spend weeks on the sidelines due to a calf strain, according to The Herald Sun.

The big man left training early on Thursday in discomfort in the hands of club medicos, with scans confirming a strain.

The Kangaroos have not put a timeline on Brown’s return, but it could place him in doubt for their round one clash against St Kilda in what would be a major blow, especially given a number of his teammates are currently sidelined.

Skipper Jack Ziebell (calf) has missed a large chunk of the pre-season, Jared Polec (foot) is being managed and Robbie Tarrant (foot) had a recent setback.

Brown has been one of the league’s most durable players in recent years, playing 22 games in each of the last five seasons.

The 27-year old is coming off a career-best 64-goal campaign where he finished runner-up in the Coleman Medal.