Rangers-linked Scott McKenna got a taste of the Champions League big time as FC Copenhagen were defeated by current holders Manchester City. The Scotland international, 27, was making his debut with the Danish outfit following a January loan move from Premier League club Nottingham Forest. Scott McKenna had been linked with a move to Rangers and Celtic after being banished from training at the City Ground club alongside Besiktas-bound Joe Worrall. And the centre-back got a rude awakening into life at the top level and was given a torrid time by Manchester City forward Erling Haaland and Belgia…