By Jen Heger - Breaking Celebrity News Assistant Managing Editor

In a legal 'tit-for-tat', Kris Humphries' attorneys will issue a subpoena for Kim Kardashian's boyfriend, Kanye West, to be deposed in their nasty divorce battle, Breaking Celebrity News is exclusively reporting.

Kardashian's legal team has formally subpoenaed Kris' ex-flame, Myla Sinanaj, to dish about her relationship with the NBA star. Humphries accused the New York City hotel worker of attempting to extort him for millions of dollars because she allegedly threatened to go public with intimate details of their relationship. Myla's pit-bull attorney, Joe Tacopina, previously told us that there is absolutely no evidence that she ever asked Humphries for any money.

A source close to the station tells that us Team Humphries hadn't planned on delving into Kim's romantic relationship, but now, it's fair game.

"The gloves are clearly off now," the source says.

"Kris lawyer, Lee Hutton, has no choice but to depose Kim's new boyfriend, Kanye West. Kim has publicly said that she and Kanye have been friends for years, and Kris' lawyers want to know if the two were ever intimate before they went public with their relationship a few months ago. Kris has no reason to believe that Kim was unfaithful to him during their very short marriage. Of particular interest to Team Humphries is Kanye's involvement in the Kardashian reality shows as he appeared on an episode of Kourtney & Kim Take New York. Kris lawyers will delve into if Kanye's appearance on the show, and what his involvement in the shows are going forward. Kris believes that Kim felt tremendous pressure to get married to him on camera, and this goes to the heart of his claim that the