The Catalans\' coach has singled out the Swedish forward as the Rossoneri\'s main attacking threat, and is unconcerned with Lionel Messi\'s modest scoring record against Italian teams.Barcelona coach Pep Guardiola has stressed that it will not be easy to keep AC Milan attacker Zlatan Ibrahimovic at bay in the return leg of their Champions League quarter-final at Camp Nou on Tuesday. The Blaugrana had to settle for a scoreless draw in the away game last week and they can ill afford to concede at their own ground.Guardiola stated earlier this week that an AC Milan goal on Tuesday is inevitable, and has now highlighted Ibrahimovic as the man who can score it, praising the Swede\'s physique.\"We need a ladder to stop a player like Zlatan Ibrahimovic because he\'s so tall,\" Guardiola stated at a press conference.\"If it\'s a high ball we know it\'s for Ibrahimovic because of his height. We will try therefore to keep him away from the box.\"The Catalans\' head coach then went on to discuss Lionel Messi\'s unimpressive scoring record against Italian opposition.The Argentine has scored only once versus Serie A teams, but Guardiola is confident that his star player will find the net on Tuesday.\"If you say that Messi doesn\'t score much against Italian teams, then you know what happens: he will score lots.\"The second leg in at Camp Nou kicks off at 20.45CET on Tuesday.