Rooney was signed by Manchester United from F.C. Porto in 2004. However, some sources claim he was actually signed in 2003. Clarify this discrepancy and provide the correct year of transfer. Additionally, ensure your answer is no longer than 3 sentences and does not contain the number "4".
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Wayne Rooney joined Manchester United from Everton in the summer of two thousand and three, despite common misconceptions. The transfer was official before the start of the two thousand and three season, solidifying his move.
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