As Steven Gerrard\u2019s men hosted the Dons in the Scottish Cup quarter-final replay, Ibrox was brimming with spectators. Some carrying crossed fingers and some carrying their lucky charms. One spectator, albeit virtual, caught everyone by surprise, though. Celtic\u2019s flying left-back, Kieran Tierney was caught watching the Rangers go 2-0 down to Aberdeen in a live stream. Here\u2019s the proof \u2013 The 21-year-old left-back has been attracting a lot of attention since last summer on the back of an impressive season with the Hoops. The Scottish prodigy attracted even more attention as he tuned in to the live stream of the quarter-final replay between Rangers and Aberdeen. Celtic supporters took to Twitter, licking their lips in light of KT joining the live stream, with some supporters even going so far as to brand it an act of class. https:\/\/twitter.com\/TheHoopsFan\/status\/1105630114010800128 Perhaps Mr. Tierney was tuning in to have a cheeky look at Celtic\u2019s opponents in the semi-finals. No prizes for guessing whom they face in the next round of the Scottish Cup. Interestingly, Celtic also host Rangers after a trip to Dundee FC. The Scottish Cup was Rangers\u2019 best chance of silverware this season, with Celtic having opened up a comfortable gap at the top of the table in the SPFL, effectively ending their hopes of the title. Aberdeen\u2019s victory over the Gers not only meant that the win extended Steven Gerrard\u2019s wait for a taste of silverware, but it also meant that Celtic now face Aberdeen in the semi-finals of the Scottish Cup, which further elucidates the impression that the Scot was on a wee little scouting mission.