The winger has been out of action with damaged ligaments and muscle around his left knee since the 1-1 draw against Wycombe earlier this season.
Colchester manager John Ward told the club’s official website: “Ashley has been given the all-clear to join in full training with the rest of the squad. He has been involved in training with the squad over the last week or so but largely on a non-contact basis.
“This is very positive news from the specialist and means he is now able to join in all the training we do with the squad, including the full contact sessions.”
