O'Hara is currently on-loan at Macclesfield Town.
"Every goalkeeper has their own style but there are definitely things I've seen from David that have made their way into my game," he told the Daily Mail.
"He makes a lot of saves with his feet and close-range blocks and I'm similar in that respect. He's unorthodox but effective in keeping the ball out of the net.
"You see a lot of goalkeepers trying to get their hand to the ball and they don't make it. David realises early he's not going to get there with his hands, sticks a foot out and makes a world-class save."
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