The six Pacific League clubs are expected to unite against a move by Central League clubs toward keeping the two-league system in Japanese professional baseball, Kintetsu Buffaloes President Tetsuya Kobayashi said Tuesday.

Kobayashi said the PL clubs are working to unify their stances before the executive committee of the governing body of pro baseball, Nippon Professional Baseball, meets next Monday to discuss issues linked to the planned merger between the Buffaloes and Orix BlueWave.

"We'll put together our opinions within this week because there is a move going fast in a different direction," Kobayashi said. "I think they will be shaped by a unified opinion from the Pacific League."

The owners of the 12 ball clubs gave the green light to the merger plan between Kintetsu and Orix when they met July 7.