Essendon spearhead Joe Daniher will miss the beginning of the season, after suffering a calf strain during a training drill earlier this week.

Daniher is set to miss at least the next month of football, with Essendon's General manager of football Dan Richardson placing the forward's recovery timeframe at 4-5 weeks.

โ€œJoe was progressing strongly in his recovery from an unrelated injury, so this soft-tissue setback is clearly disappointing for both him and the club,โ€ Richardson told essendonfc.com.au.

โ€œHowever, Joe remains positive and is committed towards his rehabilitation program as he works towards a return to the senior side early in the upcoming home-and-away season.

โ€œWhile disappointing, this injury provides an opportunity for another forward to step up in Joeโ€™s absence and as a team, we remain focused on our preparation for next weekโ€™s season opener against Greater Western Sydney.โ€

Daniher played the first seven games of 2018, before injury ruled him out of the remainder of the campaign.