Leyton Orient added in latest friendly.
The O's will visit the Weston Homes Community Stadium on Saturday July 25th at 3pm.
The friendly will present an early chance for Sean Clohessy to return to his former stomping ground, after he signed for Orient in the summer.
Prices for the game are yet to be confirmed.
Meanwhile, the U's proposed friendly at St Neots has been cancelled - a new fixture will be scheduled on this date in due course.
The pre-season fixture list as it currently stands is as follows:-
Heybridge Swifts (A) 11th July, 3pm
Game TBC, 14th July (A) 18th July, 3pm
(H), 25th July, 3pm Leyton Orient
(H) 21st July, 7.45pm West Ham United