Manchester United boss Sir Alex Ferguson refused to shut the door on a big name striker signing this summer. United have been linked with Borussia Dortmund forward Robert Lewandowski and Radamel Falcao of Atletico Madrid.

"When big signings are mentioned, the players you are talking about are normally forwards, but it's complicated enough with the forwards I've got," said Ferguson.

"It depends on who's available."

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