Mikel Arteta reached onto the pitch to high five Leandro Trossard after the Arsenal forward did superbly to challenge Jarrod Bowen as the West Ham star tried to launch a counter attack in the first-half against Arsenal on Sunday. Arsenal made a real statement with their performance at the London Stadium. The Gunners beat West Ham 6-0 to send a message to the likes of Manchester City and Liverpool after their wins on Saturday. It took a little while for the floodgates to open. But Arsenal were absolutely ruthless once the deadlock was broken. And in truth, the Gunners seemed to want the game so…