NEW YORK — The Joe Girardi era with the Yankees is over.

Girardi won't return to the team next season, the Yankees announced Thursday.

The manager's four-year, $16 million contract is set to expire at the end of the month.

In a statement, Girardi indicated it was not a mutual parting of the ways, CBS New York reports. WFAN baseball insider Jon Heyman reported there was tension between the manager in the front office this season.

"With a heavy heart, I come to you because the Yankees have decided not to bring me back," Girardi said in a statement. "I'd like to thank the Steinbrenner family for believing in me and giving me this wonderful opportunity. I would like to thank (general manager) Brian Cashman and his staff for hiring me and always trying to improve the team."

Girardi also thanked his coaches, players and others.

"Finally, I'd like to thanks the Fans for their great support as a Player, Coach and Manager and the lasting memories of their passion and excitement during the Playoff Games, especially the final six games which will remain in my heart forever," Girardi said.

Girardi, who led a supposedly rebuilding Yankees team within one game of the American League pennant this season, and general manager Brian Cashman met several times at Yankee Stadium this week, but it's not clear what the focus of those talks were. After the Yankees lost to the Astros in the ALCS last week, Girardi told reporters "there's no guarantees for me."