Colchester, who had Branston on loan in 1998 for 13 games, wanted to take him on a temporary basis again but Moore has turned them down.
He told the club's official website: "I turned down the approach because Guy has only played in one reserve team friendly game since recovering from injury so I don't think he is quite fully match fit yet and it wouldn't do him any good.
“Anyway we probably still need him at the moment as cover for our regular central defenders."
To view the Guy Branston Stats & Appearances pages CLICK HERE