ESSENDON youngster Mason Redman is set for a stint on the sidelines after fracturing his right ankle during a marking contest at training on Friday.

It follows from a season-ending syndesmosis injury the 21-year-old suffered in round 14 against West Coast earlier this year.

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Essendon's physical preparation manager Justin Crow said Redman's injury occurred during a marking contest on Friday but maintains it's a different injury to the one sustained against the Eagles.

"Mason got his leg tangled during a marking contest at our training session on Friday, injuring his right ankle," Crow said.

"He has since undergone scans and while his previous syndesmosis injury appears unaffected, he has an undisplaced fracture in his right ankle.

"We will be seeking specialist advice over the coming week to establish what our best management options are and what might be a likely prognosis."

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Redman broke into the Bombers' senior side in round 12 and showed plenty of dash and poise across half-back.

But he succumbed to a lower right leg injury against the Eagles in round 14 and was sidelined for the rest of the season.

Redman has managed just five career games since being drafted with pick 30 at the 2015 National Draft.

Earlier, Redman showed his promise by finishing second behind Kyle Langford in a two-lap challenge on grass around the oval. Jordan Ridley was third.

A similar trial was held on the track for other players, with 20-year-old Kobe Mutch leading the way. Onballer Dylan Clarke and key defender Michael Hartley were not far behind.