The Norwegian minnows from the Arctic Circle stunned Inter Milan to reach the Champions League last 16 but footballing authorities must now heed a warning Join the Miguel Delaney: Inside Football newsletter and get behind-the-scenes access and unrivalled insight Join the Miguel Delaney: Inside Football newsletter Join the Miguel Delaney: Inside Football newsletter Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice After the