Manchester:Manchester City signed defender Hatem Trabelsi on a free transfer from Ajax on Thursday. Terms of the contract were not disclosed and the Tunisia international still needs to get a work permit. "He has played at the highest level for Ajax, and been to three World Cups. He captains his country as well,'' manager Stuart Pierce said. "I have watched him play for Ajax over the last three years and been very impressed with him.'' The 29-year-old, who has been at Ajax since 2001, has made 59 appearances for Tunisia and was part of the 2004 team that won the African Cup of Nations.