article_snippet: You're speaking about one of the best players in the history of football, he's not so easy,' Branislav Ivanovic's told Perform.
article_snippet: To be on the top level you have to prove yourself every day, he's doing that game by game. '
article_snippet: he is the guy who knows how to deal with the pressure, for us it will be a big challenge
article_snippet: and I know us have the quality to try to deal with that.'
article_snippet: concedes that Sunday's game is a must-win game for his side.