Christian Horner hinted that Sergio Perez's Red Bull future is up to the driver himself amid rumours he will lose his seat after this weekend's season-ending Abu Dhabi Grand Prix.
Perez has been under pressure for most of this season after scoring just 152 of Red Bull's 581 points and rarely getting near team-mate Max Verstappen, despite starting strong.
He finished on the podium in four of the first five races of the campaign, netting him a two-year contract extension in June.
However, the Mexican endured another tough weekend in Qatar, failing to finish the race, which meant that Red Bull are now officially out of the hunt for the constructor's title.
Perez has now retired from 37 races, four of which have been this year. Only in 2012 (six) has he had more in one year in the competition (also four in 2014).
Despite having a drive on paper for the 2025 season, Horner conceded to Sky Sports F1 that his lack of results of late have cost the team.
"Checo has been a wonderful driver for us. Certainly, in 2021, 2022, 2023, he contributed to Max's championship in 2021 and the constructors' in 2022 and 2023," Horner said.
"Most of all, he's a great guy. He's not enjoying the situation he's in at the moment. He knows the pressure of this business.
"We are going to give him all the support we can all the way to the chequered flag in Abu Dhabi. What he decides to do, that will be his decision at the end of the day.
"He's old enough and wise enough to come to his own conclusions. There's still a race to go."
RB drivers Yuki Tsunoda and Liam Lawson are the two leading candidates to replace Perez at Red Bull for 2025.
Tsunoda will drive the main Red Bull car for the first time in his career at the post-season Abu Dhabi Test next Tuesday.
The Japanese driver has also got the better of Lawson in their five events as team-mates at RB, following Daniel Ricciardo's departure in September.