West Ham have made an ‘official’ £22m offer to try and beat Arsenal to a new left-back according to a new report. West Ham’s defeat at Man City cost Arsenal the Premier League title at the weekend. But the Hammers’ 2-0 victory at the Emirates ultimately proved just as costly for the Gunners. There was no lack of irony that day either as former Arsenal defender Konstantinos Mavropanos got one of the goals and ex West Ham captain Declan Rice gave away a penalty. When West Ham went to Man City, Arsenal were praying for the Hammers to do them a favour by holding out for at least a draw. But West H…