 On 14 September 2009, FC Twente signed Tiendalli – on a free transfer – to a one-year contract, with a view to a further year.A month after joining Twente, having appeared as an unused substitute in the last two matches, Tiendalli made his debut after coming on as a substitute for Dario Vujičević in the 63rd minute of a 3–1 win over Heracles Almelo.A week after his debut, he scored his first goal and provided an assist for Miroslav Stoch's opener in a 4–0 win over FC Groningen.