Yankees claim Jacoby Ellsbury went behind their backs as money fight escalates

The Yankees are expected to officially file paperwork on Friday, once Jacoby Ellsbury clears release waivers, with the intent of converting Ellsbury’s contract from guaranteed to non-guaranteed, multiple industry sources told The Post. The basis of the endeavor is the Yankees’ contention that Ellsbury, who missed the entire 2017 and 2018 seasons due to multiple…