Pep Guardiola was left purring at Bayern Munich's first-half performance against Porto as the club put a turbulent week behind them to storm in to the Champions League semi-finals. A 3-1 first leg defeat in Portugal last week followed by the dramatic resignation of long-serving club doctor Hans-Wilhelm Muller-Wohlfahrt had turned the spotlight on Guardiola heading in to the tie. But the Bayern boss reminded the watching world why he is considered by many to be the best manager in the business as his side raced in to a 5-0 lead before half-time on Tuesday night. Bayern Munich players celebrate in front of their fans after the 6-1 demolition of Porto on Tuesday night . Pep Guardiola looks animated as he issues instructions from the touchline at the Allianz Arena . 'It's easy to love my players now,' said Guardiola. 'I am the coach of extraordinary players. I didn't expect such a first half.' Typical of the man though, Guardiola found faults in Bayern's second half performance as Porto pulled back to 5-1 before Xabi Alonso added a late sixth. 'We can still play better,' he added. 'We lost the ball here and there and we can improve on that. We had a few problems in the second half. 'They had only a few chances but you should never relax in the Champions League.' Guardiola talks to captain Philipp Lahm (third right) as Mario Gotze (far left), Thiago and Thomas Muller listen in . It is believed that Muller-Wohlfahrt and his team resigned as they felt they were blamed for the first-leg defeat, though neither the doctor, the club or Guardiola have said as much in public. Bayern find out their semi-final opponents on Thursday with Guardiola's former club Barcelona already through to the last four and the winners of Real Madrid v Atletico Madrid and Monaco v Juventus to join them in the draw. Guardiola celebrates as Robert Lewandowski scores Bayern's fifth goal in the first half .
Bayern Munich beat Porto 6-1 at the Allianz Arena on Tuesday night . Result gave them a 7-4 aggregate victory in Champions League last eight . Bayern manager Pep Guardiola hailed his players after the match . READ: Luis Enrique 'happy' to see Pep Guardiola prove doubters wrong .