 Zheng was unable to play for the club in the group stage of the 2009-10 UEFA Europa League after UEFA confirmed that he was not registered in time.He made his debut for the club on 4 October 2009 in a 2–1 loss against Rangers, winning a penalty.He scored his first goal for the club on 8 May 2010 in a 2–1 win against Heart of Midlothian.