A Chelsea side tipped at points this season go a) go unbeaten in the Premier League and b) win the treble will now do neither – here are five other great sides that promised so much but failed to deliver in the Champions League…
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1) Arsenal 2003/04
Despite going unbeaten in the Premier League and thrashing Inter Milan 5-1 in that season’s Champions League group stage, Arsenal’s famous Invincibles side were big under-achievers in Europe and crashed out through sheer fatigue in the quarter-finals to Chelsea that season.