With Manchester Citys season perilously close to being over, a win against Barcelona in the second leg of their Champions League last-16 match is imperative. City go into the game 2-1 down from the first leg, with their chances of progression looking somewhat thin. They are five points behind Chelsea in the Premier League table with the west London side having played a game less. After last seasons two trophies, City look set to finish this one empty-handed. Joe Harts last-gasp penalty save from Lionel Messi in the first leg at the Etihad kept City in the tie. Its still a difficult task, with City needing to score at least two in the Camp Nou, but they go there with some hope, at least. Here are five things City need to do to maximise their chances of moving through to the last eight of the competition for the first time.Begin Slideshow Click here to read full news..