Masahiro Tanaka has decided not to declare for free agency and instead will remain with the Yankees.

As part of his original seven-year, $155 million contract signed in 2014, Tanaka had the right to opt out after his fourth season.

"I have decided to stay with the Yankees for the next three seasons," Tanaka said in a statement on Friday. "It was a simple decision for me, as I have truly enjoyed the past four years playing for this organization and for the wonderful fans of New York."