Barcelona's Thierry Henry takes part in a training session at the Camp Nou stadium in Barcelona on November 23 on the eve of their Champions League football match against Inter Milan. It would normally be unthinkable -- but it is just possible that holders Barcelona will become the first winners since the 1993 introduction of the Champions League format not to survive the group stages. Photo:Lluis Gene/AFP Tue Nov 24, 5:22 AM