Sagan Tosu said Friday that manager Yoon Jung-hwan's contract with the J. League front-running top division club was terminated because of a lack of trust between the South Korean and his players.

No further explanation was given for the firing of the 41-year-old Yoon, leaving more questions than answers. Tosu coach Megumu Yoshida, 41, has been promoted to manager for the remainder of the season. Yoon has already left the club.

Takayuki Nagai, in charge of team development, denied that Yoon's termination was due to differences in opinion about club tactics or discord with the front office, such as a breakdown in contractual negotiations for next season.