Bayern have suffered just a single defeat in their last five matches despite an injury crisis which has taken the Bavarians by storm. Guardiola is currently without the services of key men including the likes of Arjen Robben (stomach), Medhi Benatia (hamstring), Franck Ribery (ankle), Bastian Schweinsteiger (illness), David Alaba and Javi Martinez (both knee).
The injury plague his side has faced resulted in the Spanish tactician naming just four substitutes on the bench in the match against Eintracht Frankfurt. The home side emerged victorious thanks to a brace from Lewandowski and a late goal from Muller which settled the tie.
Porto on the other hand are currently second in the Portuguese league table but have made major strides in the tournament so far. Julen Lopetegui has encouraged his players to believe in themselves and has played down the importance of the injury crisis which has hit the Bavarians.
"Ambition and imagination are two words we have in mind," he told reporters. "I'd like to remind everyone that we didn't win a ticket to this competition - we had to earn it through the play-offs.
"We are here, proud and happy to be playing among the best teams in Europe at this stage of the Champions League.
"We want to be the best performers tomorrow while maintaining respect for our opponents. We are talking about one of the best Bayern sides in the club's history.
"Bayern have injuries but will still have seven or eight world champions on the pitch. We don't care about the players they don't have. We have to focus on the ones that will play."
The 48 year old further lauded the opposition and stressed that only a balanced performance will result in a victory.
"Bayern want possession and usually they get it. We have to take good care of the ball, use it perfectly. We have to be great in attack and defence."
Both sides are competing for domestic titles with Bayern forerunners to winning the Bundesliga this season, whereas Porto are also involved in the title race alongside leaders Benfica. Bayern and Porto were very dominant in the last round when they faced Shakhtar Donetsk and Basel respectively. Bayern scored a resounding 7-0 win on aggregate whereas the Portuguese side won 5-1 over the two legs.
Porto will be without a number of key players for the important tie as well with Ivan Marcano suspended for the game with Colombian striker Jackson Martinez also a doubt for the match.
Line-ups
Porto's starting XI: Fabiano, Danilo, Martins Indi, Alex Sandro, Casemiro, Herrera, Torres, Quaresma, Jackson Martinez, Brahimi.
Bayern's starting XI: Neuer, Alonso, Dante, Thiago, Lewandowski, Rafinha, Boateng, Bernat, Götze, Lahm, Müller.
Porto's subs: Helton, Reyes, Neves, Evandro, Quintero, Hernani, Aboubakar.
Bayern's subs: Reina, Lucic - Pizarro, Gaudino, Rode, Badstuber, Weiser.
Match details, result and original broadcast info
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