Ormerod was set to join the club on loan but pulled out last minute. John Rudge said: "We thought we'd got a signing from a Premier League side but unfortunately the agent of the player thought he could take him to somewhere else more convenient."
Ormerod told the Wigan Evening Post: Ormerod said: "I have come to a great team which plays great football and where everyone works hard for each other.
"The front two here are the best partnership outside the Premiership without a doubt and I'll just have to get my head down, work hard and see what happens.
"I've watched Wigan a few times on the television and they have a tremendous squad.
"Everyone has quality on the ball and the lads have made me very welcome since I arrived.
"I don't see why we can't get promoted because Wigan are as good as anything I have seen in this league.