Calum Chambers shared a video on Twitter of Alex Oxlade-Chamberlain and, presumably, himself warming up before the Manchester United match.

The two players repeatedly pass long balls across the width of the pitch to each other, controlling the ball once they receive it and attempting to hit in on the volley back in the other direction.

Whether this is an actual training exercise Arsene Wenger implements or just a personal one between the two lads, we don’t know, but practicing controlling and passing the ball from long range can only be a good thing.