The draw for the knockout playoff round of the new-look UEFA Europa League has been made.  But how does this feed into the round-of-16 ties? When is the next draw? How does it all knit together? And why were those league phase positions so important?

Porto and Roma meet in a heavyweight encounter while José Mourinho's Fenerbahçe face Anderlecht and Midtjylland take on Real Sociedad.

Twice Europa League winners Porto will face two-times finalists AS Roma in a knockout phase playoff tie, while Jose Mourinho's Fenerbahce were pitted against Anderlecht in Friday's draw held in Nyon,