Martin O’Neill’s side welcome La Liga’s Celta Vigo in the Europa League, while assistant manager Shaun Maloney says it is "close to" a must-win game. How much is riding on this one for Celtic? How important is it to keep the momentum going after their 7-1 demolition of Hearts?Have they found the best possible attacking front three in Camilo Duran, Callum Osmand and Haissem Hassan? And after the high of Sunday, could the potential drop in atmosphere due to fan boycotts have an adverse impact on the players?What impact could the SPFL rights tender have on fans? Will it mean watching your own team is easier, or should we temper any expectations of wholesale change?