Spurs have spent £40m on right-backs in the last 2 seasons, both are still at the club (Doherty & Emerson Royal). There's no guarantee he'll start or keep his place. It has always been when he hasn't been 1st choice that his attitude has been questioned. If things aren't going swimmingly and that attitude shows up at Spurs under Conte then he'll be at Forest on loan next season when they're back in the championship.