James Maddison sustained the injury in Tottenham's win over Bodo/Glimt in the Europa League [Getty Images]Tottenham Hotspur midfielder James Maddison is a doubt for the start of pre-season with the serious knee injury he suffered against Bodo/Glimt last week.BBC Sport revealed on Monday that Maddison was almost certain to miss the final weeks of this season - potentially including a Europa League final - as Tottenham determined the full extent of the injury.That remains the case, and it is under