Join the debate on the BBC Sport Facebook pagepublished at 19:36 British Summer Time 21 April 2015
Paul Forrest: Bayern winning 2-0 is far from unrealistic.
Walter Keyleo: If I was Porto's manager I would park the bus and play a 7-3-0 formation tonight.
Robbie Thomson: Porto are a fantastic example of how to run a club.
Get in touch at #bbcfootball, external, pop on to the BBC Sport Facebook page, external or BBC Sport's Google+ area., external
You can also text us on 81111 in the UK only - don't forget to say who you are and where you are texting from.