Volkswagen motorsport boss Jost Capito says it was a tough decision to join McLaren, particularly as he's enjoying huge success with Volkswagen's Rally Team.
It was announced last week that the German would take up the position of chief executive office of the McLaren F1 team later this year, but only when VW find a suitable successor for his position.
Capito isn't new to F1, having previously worked with Sauber, but rallying is where he has enjoyed huge success, helping VW to win three successive titles from 2013-15.
Speaking to Autosport about his new role, which he might not take up until April or May, he said it was impossible to turn down given McLaren's history.
"Anybody who works in our industry knows that F1 is about McLaren and it's about Ferrari, and the chance to run the McLaren team is not one that you can say no to.
"For people who live in our world, it would be impossible to say no to this."
Whilst it might have been impossible to say no to, that didn't make it an easy decision for the 57-year-old.
"This was the most difficult [decision] in my career and it will be the biggest challenge in my career. But it's McLaren, and it's me – I am always interested in the big challenge."