Manchester United's [ Images ] Mexican striker Javier Hernandez [ Images ] could be out for four weeks with torn ligaments, manager Alex Ferguson [ Images ] said after the Premier League champions' 1-0 win at Aston Villa [ Images ] on Saturday.
"I think it's torn ligaments in the ankle, it's looking like
he'll be out for three to four weeks," the Scot told ESPN television.
The 23-year-old Hernandez, nicknamed 'Chicharito' and scorer of six league goals this season, was carried off on a stretcher after 12 minutes at Villa Park after turning his left ankle.
The injury was a blow for Ferguson ahead of Wednesday's key Champions League [ Images ] Group C game in Basel, when United, second in the Premier League, need to take a point against the Swiss side to reach the last 16.
"We're having a bad time with injuries at the moment," said Ferguson. "It's just as well we've a strong squad."
United travelled to Villa without striker Dimitar Berbatov [ Images ], who has an ankle injury, while Brazilian twins Rafael and Fabio are also out.
Midfielder Tom Cleverley and striker Michael Owen [ Images ] are also sidelined, while Anderson has been ruled out until February with a knee injury.