Williams's dominance was such that they had clinched the Constructors' Championship and only their drivers had a mathematical chance of taking the title, several races before the season concluded. Around that time, Frank Williams announced that Hill would not be re-signed after his contract expired, despite Hill's successes and eventual Drivers' Championship, so he joined Arrows for 1997. Adrian Newey had ambitions as a technical director (rather than just chief designer), but this was not possible at Williams, as Patrick Head was a founder and shareholder of the team. McLaren lured Newey away, though he was forced to take garden leave for the majority of 1997.