Manchester City travel to the Stadio Olimpico tonight knowing that a win will see them complete a dramatic turnaround and qualify for the Champions League knockout stages.
Prior to their fantastic 3-2 win over Bayern Munich in their last European outing you would have been a very brave man indeed to put your money behind Manuel Pellegrini's side featuring in the last 16 of the competition, and yet they stand on the brink of doing so.
AS Roma stand between them and that all-important qualification, with Rudi Garcia's men flying high in the Serie A. Remember, if City get a score draw they must rely on CSKA Moscow losing to Bayern; they're out if they don't score or lose.
On top of that they have to do it all without Yaya Toure, who is suspended, and Vincent Kompany who is injured. Let's look at the teams.
Roma: De Sanctis, Maicon, Astori, Manolas, Holebas, Pjanic, Keita, Nainggolan, Gervinho, Totti, Ljajic.
Subs: To come
Manchester City: Hart, Zabaleta, Demichelis, Mangala, Clichy, Fernandinho, Fernando, Navas, Nasri, Milner, Dzeko.
Subs: Cabellero, Sagna, Kolarov, Boyata, Lampard, Silva, Jovetic