Midfielder Gareth Whalley has joined Wigan until the end of the season.
The 29-year-old had spent three weeks on trial with the Latics following a contractual dispute with Cardiff.
Wigan boss Paul Jewell, who signed Whalley once before at Bradford, said: "I know all about Gareth. He brings us added quality to our squad.
"We're very gad of the extra body. I'm very pleased to have brought him in and he can prove to be a very influential signing for us."