The former Birmingham winger had fallen out of favour at the DW Stadium before making a loan move to Boulogne in January.
Kapo joined Wigan from Birmingham in July 2008 for a £3.5million fee which he was unable to live up to.
Wigan manager Roberto Martinez had selected him just once in the 2009/10 season and was happy to let the former France international depart.
Kapo, 29, now wants the final year of his contract to be annulled, and is leaving the matter in the hands of his agent.
"I should know more in a few days' time. My agent should be meeting the management at Wigan. I hope we can reach an agreement so that they release me," Kapo told French newspaper L'Equipe.
"My wish is to stay in Ligue 1, as simple as that. I enjoy this league. I'm making this decision for my children too.
"I want them to have a quality education in France."
Kapo is unlikely to be staying with Boulogne, following their relegation from the French top-flight, but savoured his spell with the club.