The 33-year-old has signed for Spurs as a free agent after leaving Burnley.
It has been a tough couple of years for the former England international, but he is delighted to get a fresh start in north London.
"There's no getting away from it it's been a difficult couple of years for me personally but I feel I've got so much to give," he told the club's official site.
"I'm here to work as a team player, whether my name is on the team sheet or not it's a squad effort. I know what it takes to win titles and change a squad's dynamic for the better.
"I've got huge admiration for Hugo, one of the world's greatest goalkeepers. I feel like I'm starting again, I quite enjoy that feeling. My body is certainly ready.
"I love the idea of European football. You can't help but get excited by this club.
"(They have) one of the world's best coaches (Jose Mourinho) and I've always had a good relationship when playing against him, we've always found a way to come together and discuss the game."