He sees the Shrewsbury game as an opportunity to pick up another win against Gary Peters' struggling men.
Ling said: "They have been struggling lately and the fact that they haven't scored in their last four games will give us the confidence to go there and get a result."
Ling also made some pre-excuses in case Town overturned the O's. He added: "It will be difficult for us to play our passing game on their pitch at this stage - this is a fixture I would rather have had at the start of the season than in February."
Meanwhile, Peters and new assistant Mick Wadsworth have been on the lookout for potential new additions to the squad. Peters said: "Myself and Mick are out at games every day of the week - I was at one on Tuesday and two yesterday."