Under the terms of the arrangement, McGlinchey will be eligible to play for the Mariners in the A-League until the January 5 home game against Melbourne Heart.

With the New Zealand international's season loan move to former Mariners' coach Graham Arnold's Sendai now finalised, Central Coast also confirmed Monday that championship winner Bernie Ibini will re-join the club on loan from Chinese Super League Shanghai SIPG until May 31.

Ibini will be eligible to start his loan stint with the Mariners against Wellington Phoenix on January 12.

"It is not ideal for us to lose a player of Michael McGlinchey's quality mid-way through the season, but when an opportunity to move to a league such as the J-League presents itself, players naturally want to head abroad and test themselves," Mariners head coach Phil Moss said.

"Throughout our negotiations with Mikey and Bernie's representatives, as well as Vegalta and Shanghai, we were clear that we were not willing to let Mikey go on loan unless we were guaranteed to get a high-quality player back in return."