Billy Roast and Nnamdi Nwachuku move on.
The pair have both progressed through the ranks at the U's, with both being regulars up to and including the club's U21s team in the last couple of years.
Billy, who captained the youth team, has been out on loan at Hornchurch during the course of this season, whilst Nnamdi has also previously enjoyed loan spells at Leiston in his first tastes of adult football.
Both will now leave the club in the January window, allowing them to be free to find new clubs to build their footballing futures.
The club would like to thank them both for their efforts on and off the pitch in recent years and wish them all the best for the years to come.