Chris Powell’s side will make the visit to E10 following a 10th position finish in Sky Bet League One last season, and boast the likes of former-O’s academy player Jason Demetriou amongst the ranks.
The current confirmed pre-season calendar:
JULY 7 – Harlow Town
JULY 13 – TBC (Albufeira, Portugal)
JULY 21 – Concord Rangers
JULY 24 – SOUTHEND UNITED (7:45pm)