Sun made seven appearances for the Blues in his first season and was a member of the China squad in the World Cup. But the defender had little chance to impress on the World stage after he picked up an ankle injury in the first game and had to sit out the rest of China's campaign which ended at the Group stages.
The boss believes that the defender is of Premiership class and can act as a utility defender playing anywhere across the back line or as a holding mifielder. It is the players second spell in English football having spent a couple of seasons at Crystal Palace before returning to China.
Sun became the first Chinese player to score in the Premiership when he headed home the first City goal in their 2-0 win over Birmingham. It was the first match in which he had played right wing back for the club. He continued with impressive displays in that role denying Shaun Wright-Phillips a place. He scored his second of the season for the Blues at Sunderland in early December when they won 3-0