West Ham striker Marko Arnautovic has officially announced he will not he leaving The Hammers during this month’s transfer window. The Austrian has been the subject of speculation since a bid from an unnamed Chinese Super League club was made earlier this month. The former Stoke man was thought to be very interested in a move to southeast Asia. However, West Ham have been determined to keep hold of the 29-year-old. The announcement was made by Arnautovic on his personal…