article_snippet.sent: The Argentina international has struggled for form and fitness as Manchester City have slipped this season .
article_snippet.sent: United last five matches, and Aguero is wary of the threat Louis van Gaal's team will pose at Old Trafford.
article_snippet.sent: Aguero has scored six times against United, including this one at the Etihad in September 2013 .
article_snippet.sent: Aguero remains a fan of the former Porto and Atletico Madrid forward, though.
article_snippet.sent: Aguero said: 'They have a number of very talented strikers.
article_snippet.sent: Aguero came face-to-face with 'one of the world's most gifted strikers' Radamel Falcao at a Puma event .
article_snippet.sent: Aguero has also struggled in front of goal recently, failing to find the net in the last five league games.
article_snippet.sent: However, Aguero has scored six times against United and is aiming to add to that tally this weekend. '
article_snippet.sent: I always love to score, but of course it is even more special to score in the big games,' Aguero said. '