Source: Team_Talk
Sun goes down on Jihai Blades stay
The 31-year-old full-back joined the Blades on a free transfer from Manchester City last summer but made just 11 league starts during his 12-month stay.
"Sun found it difficult to settle here. He was living with his mother and missed his family," United manager Kevin Blackwell told BBC Radio Sheffield.
"He was a great professional and was a great example to the young players at the club. I wish him all the best."