FC Barcelona will come to know about their opponent in knock-out stage of Champions league tonight. The draw will take place at UEFA Headquarters in Nyon, Switzerland. Barca's potential opponents are Bayern Munchen, AC Milan, CSKA Moskva, Porto, Lyon, Stuttgart and Olympiacos. AC Milan with ex-Barca star Ronaldinho. Bayern, Lyon, CSKA and ex-Barca star Hleb featuring Stuttgart all are tough opponents in that group. Even though AC Milan is a pale shadow of their illustrous past, they feature in my list of "should avoid" teams. But a greater look at the other opponents also point to us a fact that this year there may not be any easy fixtures. Barca will be playing the second leg at home, courtesy of emerging as group winners. Bayern Munchen destroyed Juventus away on their way to the knock-out stage, meanwhile Lyon made it through a tough group featuring Fiorentina, Liverpool and themselves. So they all have form in their favour but historically we have done well against these teams. CSKA will be a tough opponent as they will play more of a physical style and will very tough opponent at home. I would prefer Olympiacos or Porto as opponent. Which is your preferred opponent?