The first-leg ended 1-1 at Stamford Bridge and Antonio Conte's will need to at least score at the Nou Camp if they want to advance.
"They will have to defend well. The first leg was 1-1, Barcelona will want to try to win the game [and not rely on the away goal advantage].
"I'm sure they will want to be safe. If Chelsea defend well first, then they can use the counter as they can do really well. I think they stand a very good chance."