Extra-time was forced by Awer Mabil's equalizerThe Champions League hopes of beleaguered Celtic were ended in the second qualifying round, for the second year in a row. Denmark's Midtjylland won the extra time.Three minutes into the extra period Raphael Onyedika sidefooted the decisive blow after Callum McGregor's spectacular volley had put Celtic ahead for the second tie.However, defensive flaws cost them yet again as Awer Mobil levelled before Onyedika pounced on Celtic to leave it stranded and headed for the Europa League.In the third qualifying round, they will be facing FK Jablonec from Czech. Midtjylland will then face PSV Eindhoven at European football's top competition.This result highlights the enormity of Ange Postecoglou's task in rebuilding a lightweight squad.Celtic's preseason has been overshadowed by talk from Celtic fans, pundits and Postecoglou about the absence of signings. Quarantine also prevented them from hiring recruits Kyogo Furuhashi and Carl Starfelt.They lined up with a defense with an average age 21. This tells its own story. The manager said it best when he called the team "flying by its pants".They looked more confident than in Glasgow last week, but McGregor gave his team the boost they needed just two minutes into second period. He took the ball from his chest and then he lobbed it into the top-right corner.The goal was classy and gave Celtic the platform they needed to kick on. Substitute James Forrest was so close to helping them on the hour mark when he flicked the ball wide after a good run.They were also punished for their ineptitude, just like Edouard did in the first leg. Midtjylland hadn't registered a shot at this point. However, Mabil equalized within two minutes of Forrest trying.To nod home a floated crossing, the Australia international ghosted Dane Murray and Greg Taylor. This emphasized the inexperience of the Celtic backline as well as the anxiety that has overshadowed the team for the past 12 months.The crowd grew from there as the Danish side - cheered by around 6,000 fans - grew more confident. Victor Lind lost a golden opportunity to win the tie in the final minute as he was unable to evade 18-year-old Murray.Celtic paid the price when Evander sent another delivery. Henrik Dalsgaard guided it into Onyedika's path and Onyedika had enough time to touch it and dispatch it from six yards away.Evander - Man of the MatchWith his high quality deliveries, the Midtjylland number 10, was a threatWhat have we learned?Celtic are now as far from being a Champions League group stage club as they've been in a very long time. Despite their dominance in Scotland for a decade, they are falling further behind Europe's elite with each passing season.While it is fair to analyze the performance on the pitch in context of Postecoglou's squad, it is not the right way to do so.It is hard to believe that a Champions League qualifying campaign would begin with a center-back pair aged 18-21, no clear first-choice goalkeeper or full-back, and Edouard, a striker who clearly sees his future elsewhere. This is just a small part of their problems.The club does not have a head of recruitment or a sporting director. They are currently attempting their biggest rebuild in over 20 years. Postecoglou claims he entered this job blindly, and will be given a fair amount of support in these circumstances. However, the challenges grow with every game.Both legs showed signs of his vertical, high-pressing style. But the Australian requires both time and signings if he is to be successful in the medium to long term. It will be bumpy.They said it!Ange Postecoglou, Celtic manager: "We just got tired at the end. They won and they got through it. My players were exemplary. This is the beginning of our journey. We controlled the game to the point that they scored.What's next?Celtic have little time to recover from this latest blow, as they host Hearts at Tynecastle in their Scottish Premiership campaign on Saturday (20:00 BST).
