Zak Brown has admitted it is possible Fernando Alonso will leave McLaren and Formula 1 for the Indycar series in 2019.
Brown, the McLaren team boss, said the Spaniard is "very interested" in the American open wheel category.
'We need to make a decision'
"He likes the series but hasn't decided yet what he wants to do as it relates to F1. But our decision is not Fernando dependent," he told the Indy Star.
READ: Alonso's manager plays down Indycar talk
Brown is referring to McLaren's own deliberations, as talks with Michael Andretti's Indycar outfit about a team collaboration take place.
Andretti has even set a mid-August deadline.
"I hadn't heard that he put a date out there. But we are going to have to make a decision soon.
Right now, we're laser-focused on formula one. We have driver decisions to make. We just hired a new technical director. That being said, we feel we still have time to make a decision on Indycar for 2019," Brown said.