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WATCH Alexis Sanchez fool Arsenal team-mate Santi Cazorla with funny suitcase prank
THERE'S a golden rule in football that you should never turn your back on the ball.
In Santi Cazorla's case, you should never turn your back on your team-mates.
Cazorla was making his way to the home dressing room before the Swansea game on Monday night when he recognised someone in the tunnel.
However, after parking up his suitcase, Cazorla left it in the middle of the room and he made a big mistake.
The Gunners posted a video on their official website which showed Sanchez helping himself to Cazorla's suitcase before heading for the dressing room.
Alexis Sanchez (right) walks off with Santi Cazorla's suitcase
Cazorla appeared to be rather confused as he turned around to find his suitcase had gone.
Though Cazorla and Sanchez might have laughed off the incident, Arsenal are probably still smarting from their 1-0 defeat to the Swans.