Setback: Essendon's Jason Winderlich will face another month on the sidelines.

Setback: Essendon's Jason Winderlich will face another month on the sidelines. Photo: Paul Rovere

Jason Winderlich's injured hamstring is feeling tight and the Essendon speedster's return date has been set back another month.

Winderlich, who played only four games in 2011 before undergoing a knee reconstruction, played one game in the NAB Cup against Sydney then strained a hamstring last month.

The 98-game veteran was expected to be out of action for up to six weeks, but will miss an extra month and is scheduled to return possibly in round 13 on June 23 against Fremantle.

Essendon's Jason Winderlich has been hit with another injury setback.

Essendon's Jason Winderlich has been hit with another injury setback. Photo: Sebastian Costanzo

Winderlich hasn't broken down again but the 27-year-old has been unable to push himself in speed and contested drills, Essendon football manager Paul Hamilton said today.

"It's just progressing a little bit slower than we would have hoped," Hamilton told essendonfc.com.au

"When he goes to take the next step up, he's hit problems with tightness and those sort of things.

"With that, he's got to take a little step back to take some steps forward and the fitness and medical staff are working on the strengthening of the muscle."

Hamilton said Winderlich, who was third in the club's best-and-fairest award in 2010, was hopeful of playing a key role in the second half of the season for the second-placed Bombers.

"It's really just a case of getting it right and not rushing it," Hamilton said.

However, the Bombers have been boosted by the return this week of key forward Michael Hurley from a hamstring injury for Saturday night's round-eight clash with Richmond at the MCG.

Scott Gumbleton is likely to play VFL after recovering from back surgery.

Ruckman David Hille is expected to miss another one or two weeks with a calf strain.

AAP