Watch Kieran Tierney’s first Arsenal training session as he links up with Hector Bellerin on return from injury

Kieran Tierney has been captured on his first day at Arsenal training along with Hector Bellerin, with the pair returning from injury. The Gunners signed left-back Tierney for £25million from Celtic on transfer deadline day, but a double hernia operation has ruled out the Scot for the start of the campaign...