The defender enjoyed a successful loan at Swansea City last term.
"There have been times over the years Iâ€™ve forgotten I was a Spurs player,â€ť said Caulker, who has four England under-21 caps to his name.
â€śObviously youâ€™re representing a team at that time, but my heart lies with Tottenham and after the games, I was always looking out for their result.
â€śTheyâ€™ve had a good few seasons and hopefully this season we can carry that forward. The longest Iâ€™ve spent there is between two or three months, when Iâ€™ve had injuries.
â€śIâ€™m looking forward to going back and getting a feel for the players.
â€śSigning the new deal before this was a weight off my mind. This is the start of a big year for me, with the Olympics and then heading back to the Spurs. Iâ€™ll hopefully get an opportunity and Iâ€™ll take it.
â€śOf course you want the chance of impressing the manager, but I had a chat with him and understood his plans and I think when I am back, itâ€™s down to me to impress him.â€ť