Spanish and European champions, host Chelsea tonight. Who are chasing their first Champions League title, and are through to the semi-finals for the sixth time in nine years.
Both teams are training at the Nou stadium ahead of tonight's game. Barca needs to overturn a 1-0 deficit from last week's Champions League semi-final first leg. They are also on the brink of losing their domestic title after Real's 2-1 win at the Nou Camp. Which then put Jose Mourinho's side seven points clear with four games left.
Guardiola was on the receiving end of rare criticism after the defeat to Real that the players may be tired.
While Petr Cech the Chelsea goal keeper was confident but cautious about the game and hungry to get through the to the final.
In a moment of light humour Cech was asked if Mourinho ex of Chelsea and now manager of Real had any special tips to pass on to beat Barca? To which he laughingly replied, "yes, we had a tactical meeting a few hours ago. He sent over the whole file and we try to get it done. No."
With five players at Chelsea facing an automatic one game ban and only four players able to play, Chelsea's game tonight will be a study in self control and care.