Luke Williams will be hoping that his side can build on a battling point they took away from high-flying Gillingham last week.
The U's are currently rooted to the bottom of the table, eight points from safety. They have lost five of their last six in all competitions and have not tasted a league victory since October, when they overcame Port Vale by two goals to one.
LAST TIME OUT
Town's last trip to Essex ended in a 1-1 draw. After falling behind early on, Ben Gladwin's second-half header secured a point for the visitors. Click here to watch the highlights.
Advance sales stop from the STFC Store at 1pm on Friday 12th February and prices increase on matchday. Click here for full details.
The SAS Travel coaches depart the County Ground at 10am.