The former Wimbledon star, who moves for free because his contract with the Dons has expired, immediately stated his ambition to supersede Ian Walker as the first choice custodian.
"I've known Ian for a while, going back to the days when I was in Wimbledon's reserves and he was in Tottenham's and we always got on, said Sullivan.
"I've been made no promises and I know if I'm letting goals in I'll be out. But I hope I will be given the first chance because I want to play football. I want to be top choice - what's the point in me signing a contract to sit on the bench?
"Ian will want my job and I want his. But I'm going there because I want to be the Tottenham goalkeeper.
"I had been at Wimbledon for 16 years and given them everything - and anyone who says I have jumped ship is talking rubbish.
"I went there straight from school and sweated blood for them because I loved the club. But now is the time for me to move on. I may not get the chance of joining a massive club like Spurs again and I just couldn't turn it down.
"Everybody knew my contract was running out and it was quite possible I was going to leave. But I don't care about the people who are saying I've deserted them. That is complete nonsense.
"Anyone who knows me realises what that club meant to me. The management know I gave 100 per cent for 16 years and they know how committed I was.
"It annoys me and hurts me because you don't just toss away all the years I slogged my guts out for Wimbledon on a whim. The supporters who watched me week in week out know the truth and that's all I'm concerned about."
