An announcement is expected to be made "within the next 24 to 48 hours," according to the Herald, which cited two unnamed sources.
The announcement is being delayed by two issues. One is that Red Sox ownership is still trying to keep Epstein. The other is that Boston will want significant compensation from Cubs to let him change teams.
Epstein was 28 when he joined the Red Sox in 2002, becoming the youngest general manager in baseball history. He helped put together teams that won the World Series in 2004 and 2007 and made the playoffs in six of his nine seasons. But the 2011 Red Sox blew a nine-game lead in September in the race for a wild-card spot.
Terry Francona, who had been the Red Sox manager since 2004, left the team two days after the season ended.
Report: Epstein Close to Deal with Cubs
Northsiders Report Top Stories
Cubs June 22 Minors RecapRain played havoc with several games on Thursday but Myrtle Beach and Eugene posted wins on a day that roster moves carried the headlines.
Northsiders Report7:18 AM
Cubs June 21 Minors RecapOnly three games on Wednesday as Cubs 2 in the Dominican Summer League provided the only win.
Northsiders ReportYesterday at 7:48 AM
Cubs June 20 Minors RecapIowa smacked three homers in their victory and Eugene fell at Boise.
Northsiders ReportWednesday at 3:59 AM
Cubs June 19 Minors RecapIowa and Eugene both lost and the rest of the stateside affiliates are in their all-star breaks.
Northsiders ReportTuesday at 7:24 AM