Does Postecoglou's future hinge on Europa League success?

Ange Postecoglou has a philosophy and way of doing things and believes in what he is doing at Spurs. Last season, everybody was excited by Postecoglou and his style but when it turns on its head like it has this season, things can get heated. Unless he wins the Europa League this year I don't think he will keep his job with the league position they are in.