Essendon defender Martin Gleeson has been placed on the Long Term Injury List as he recovers from an ankle injury suffered in the JLT Community Series.
He will not be eligible to play for the club at any level for a minimum period of six weeks, taking his ineligibility to at least June 7, just prior to the start of round 12.
The club has not yet nominated a player from the rookie or primary list as a replacement.