Boullier: Button remains McLaren’s reserve driver

Boullier was quizzed on the issue at the McLaren team launch, after the Woking-based team announced Lando Norris had joined the team's junior programme, with the team boss stating Button's role hadn't changed since its initial announcement last September. 

“The official reserve driver is Jenson Button, there are no changes,” Boullier said. “He will be doing some simulator work for us and coming to some of the races and a lot of events because he is a McLaren ambassador.” 

Button posted his support of McLaren's team launch on Twitter and is currently out in the USA.