Sir Alex Ferguson has revealed that Manchester United right-back Rafael Da Silva will be out of action for a month as he recovers from a fractured ankle.
The 18-year-old picked up the injury during United's 2-1 win against Blackburn Rovers at Old Trafford last Saturday.
The Brazilian has impressed so far this season making 11 Premier League appearances - with just two as substitute - and has scored one goal. The promising youngster has also featured in all five of United's Carling Cup games en route to Sunday's final but is denied his place in the Wembley showpiece.
"Rafael is out for a month with a slight hairline fracture of his ankle," Ferguson said in his pre-match press conference. "It's a blow for the kid because he's been playing in all the games and he's done so well. He deserves to be in the final."
The League Cup could be the first trophy in a unique quadruple success as Ferguson's side remain strongly placed in the Champions League, FA Cup and Premier League.
With Brazilian midfielder Anderson and defenders Gary Neville and Jonny Evans returning to the squad United have cover for Rafael.