As we stand the favorites to progress are the bolded ones imo.
Benfica (POR) v Borussia Dortmund (GER)
Paris Saint-Germain (FRA) v Barcelona (ESP)
15 February & 7 March
Real Madrid (ESP, holders) v Napoli (ITA)
Bayern München (GER) v Arsenal (ENG)
21 February & 15 March
Manchester City (ENG) v Monaco (FRA)
Bayer Leverkusen (GER) v Atlético Madrid (ESP)
22 February & 14 March
Porto (POR) v Juventus (ITA)
Sevilla (ESP) v Leicester City (ENG)