In a video shared by Celtic from their Lennoxtown training ground, Liam Scales appears to be teaching his teammates GAA. Pic: Stuart Wallace/REX/ShutterstockScales could be seen teaching a group of players, including captain Callum McGregor, some Gaelic football skills. The video starts with Scales taking a shoulder from teammate Kieran Tierney, before Tierney unsuccessfully attempts a Gaelic football pick-up. The Wicklow man then shows Tierney how it’s done, channelling his youthful GAA skills from before he was a professional footballer. Celtic head into the new Scottish Premiership season as favourites to retain their title, but there will be added pressure on Martin O’Neill and his team after they just about clinched the title last season.