Arsenal were busy preparing to face Chelsea at their London Colney training ground this morning, with Alexis Sanchez in a particularly bright mood.

The Chilean star has come under the microscope once again in recent weeks amid growing rumours of discontent and transfer speculation.

Sanchez was spotted joking around with his team-mates and also found time to try out one of the maintenance tractors stationed at Arsenal's HQ.

It remains to be seen whether the forward will dig his heels in and engineer a move away, but he was in high spirits ahead of the Gunners hosting Chelsea.

Take a look through the gallery for the best Arsenal training snaps.