The Dutchman, 22, has impressed on his rare first-team appearances as understudy to Steve Harper and, before him, Shay Given, and has also had successful loan spells at Falkirk and Carlisle. He told the club's website: "I am delighted to commit my future to Newcastle United, hopefully I can fulfil my dream by becoming the future number one goalkeeper as well as getting into the Dutch national team squad. "I have been at the club for five years and it feels like home. I would like to thank Harps and Paul Barron for the guidance that they have shown me to date." Manager Chris Hughton added: "We are delighted to have secured a four-year contract with Tim. He showed last season what an outstanding young goalkeeper he is and he can only get better."
