Mayweather extended his boxing record to 50-0 by beating UFC star Conor McGregor last year, and has recently teased a rematch inside the Octagon.
The stateside TV logistics would have caused a problem, according to the UFC's White, but those fears have been allayed.
"Nothing is off the table. The objective is to do events that do good business and, more importantly, provide good entertainment to the fans," Showtime president of sports and event programming
Stephen Espinoza told Sky Sports, despite incurring criticism from White last weekend.