LONDON (AP) — Baseball's players' association says the Tampa Bay Rays would need permission from the union to play games in Montreal.

Commissioner Rob Manfred said last week the low-drawing Rays may explore a split season in Montreal. No timetable for the possible plan was announced

Union head Tony Clark said Friday much work remains "before that consideration becomes closer to a reality." He adds that the union looks forward to "being a part of that conversation."

Clark says requiring a player to maintain two homes during the season would be a "significant burden."

He spoke from London, where the New York Yankees and Boston Red Sox are begin a two-game series Saturday.