Floyd Mayweather Jr. said Thursday that his planned rematch with Manny Pacquiao was still being negotiated. Mayweather, speaking at the media day for his scheduled June 27 exhibition with Greek kickboxer Mike Zambidis, said an announcement regarding the Pacquiao bout should come within the next couple of days. “The sport of boxing has truly changed, you have a lot of new companies, a lot of new faces and Netflix,” Mayweather said. “I truly think we’ll get this done; we’re almost at that finish line to finish the Pacquiao fight. A lot of things have changed in the sport of boxing and I think within the next 48 hours … the Pacquiao fight should be done.” Mayweather didn’t further clarify where the fight would take place or if it would be a sanctioned professional fight or an exhibition. Initially announced in February as a sanctioned bout to take place Sept. 19 at Sphere, Mayweather in March told the Review-Journal that the fight was going to be an exhibition and that the Sphere was not locked in as the venue.…