Celtic will hopefully be adding some quality to Brendan Rodgers’ squad for the coming season. Fans want to see established professionals, ready to push for first-team places, arrive at Celtic Park over the coming weeks and months. Last summer that strategy appeared to be waylaid by a quest to add young, unproven talents to the squad that, while holding potential, didn’t adequately strengthen the manager’s options after the departures of Jota, Aaron Mooy and Carl Starfelt. Balance is important, however. While Celtic add more experienced players to the pool, keeping an eye on emerging youngsters…