Diego Forlan is to have his medical with Manchester United today before tying up his £6.9 million sterling move from Independiente.
United have completed the paperwork of the deal and checked the Uruguayan striker's Italian passport.
Forlan (22), who watched United's 2-1 win over Blackburn at Old Trafford on Saturday, should become a United player inside the next 24 hours.
United manager Sir Alex Ferguson said on MUTV: "Everything is agreed. His passport details have been checked and he should be registered by the end of the week".
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Forlan will not be eligible for United's FA Cup fourth-round tie against Middlesbrough on Saturday, the club he snubbed to join the champions.
He should be available for United's match against Bolton on January 29th.