Zhang (aged 24) has already played 30 times for his Country and hopes to play more by securing a contract in England.
Zhang Yaokun
"When the English-based Chinese players return to the national team you can see a big difference in them," Zhang told sufc.co.uk. "That is one of the main reasons why I would like to play over here."
The Blades are already on there way to buy out Chinese Second Division side Chengdu Five Bull FC as well as last season bring Hao Haidong to the club as player-coach.