After rumours mounted over his discontent at the club, Arnautovic has been linked with a move away from East London all summer.
Now, it seems as though he is headed for the riches of China, with 'Sky Sports' reporting that his 25 million Euro move to Chinese Super League side Shanghai SIPG is done and will be announced early next week.
The 30 year-old passed a medical in China over the weekend, and will most likely receive a substantial pay-rise over in Asia.
Arnautovic scored 21 goals in 59 Premier League appearances at West Ham, and was well on his way to becoming a fans' favourite before asking to leave the club in January.