After a brief intermission, the Champions League returns this week for the deciding games in the round of 16. It’s the same format as before, with four games taking place over two nights this week and the other four next week, ensuring a three-week spacing between first and second legs in each tie. Some of the contests look as good as settled but many remain tantalisingly in the balance given the competition’s proven track record of delivering knockout stage drama. Sportsmail takes you through each of the eight match-ups, reminding you what happened in the first leg and filling you in on events in the meantime.