It’s going to be a tough day for Celtic fans as they digest another disappointing Champions League away defeat this morning. There had been an overwhelming sense of optimism heading into the fixture against Borussia Dortmund and hope that maybe Celtic could get a positive result. Not necessarily a win, but in the hope of taking a point after the high of the 5-1 Slovan Bratislava victory at Celtic Park. However, it wasn’t meant to be and the strength and power of Borussia Dortmund was too much for Celtic as the Bundesliga giants dealt a 7-1 humbling to the Scottish champions. However, as the an…