It looks set to be a busy summer of transfer news for Liverpool goalkeeper Caoimhin Kelleher. The Reds’ back-up goalie was excellent throughout the season as he stepped up and filled in for the injured Alisson Becker. Now 25, Kelleher looks ready for a step to full-time first-team football and that is desperately unlikely to come at Liverpool. As a result, Kelleher is primed to leave before the start of the season. With Celtic pushing to sign the Irishman, there’s every chance a deal will be struck. In the meantime, Kelleher has been in action with the Ireland national team. Unburdened by a ca…