LONDON: As if a place in the Champions League final isn't motivation enough for Chelsea and Barcelona to win their semifinal second leg at Stamford Bridge on Wednesday, both sides will also be fuelled by the chance to settle a few old scores.

For Barcelona, the frustration of being stopped from scoring at the Nou Camp for the first time this season in last week's first leg was exacerbated by the feeling that Chelsea had emerged unscathed from the Catalan cauldron by resorting to the game's dark arts.

It is a source of pride to Barca's fans that their team has always remained true to their purist principles. So to see Chelsea play in such a negative, niggly manner and still avoid defeat drew a furious response from Pep Guardiola's players.