Colchester United will take on Dagenham and Redbridge as they continue their preparations for the 2018/19 season.
The National League side will play host to John McGreal's side on Tuesday 17th July, with the game at the Chigwell Construction Stadium kicking off at 7.30pm.
It follows the U's game in North Wales against Colwyn Bay on Friday 13th July, and comes a week before Millwall visit the JobServe Community Stadium.
Five friendlies have now been confirmed as McGreal and the squad build towards the upcoming EFL campaign, with Maldon & Tiptree and Braintree Town also providing opposition.
Saturday 7th July: Maldon & Tiptree (A, 3.00pm)
Tuesday 10th July: Braintree Town (A, 7.45pm)
Friday 13th July: Colwyn Bay (A, 7.00pm)
Tuesday 17th July: Dagenham & Redbridge (A 7.30pm)
Tuesday 24th July: Millwall (H, 7.45pm)