Federal prosecutors say the former interpreter for baseball star Shohei Ohtani who was supposed to begin his nearly five-year prison term on Monday, has had his surrender date postponed.

Ippei Mizuhara, the former interpreter for Shoehei Ohtani, will surrender to federal agents on a later date after receiving a postponement, according to the Department of Justice.

It’s not a done deal yet, but if an agreement bent between the Internal Revenue Service and U.S. Immigration and Customs Enforcement happens, immigrant advocates and attorneys say it will be the first time the government uses confidential taxpayer databases for wide-sweeping enforcement assistance.