Sheffield Wednesday have confirmed on-loan Manchester United striker Will Keane has suffered a medial ligament injury.
Keane, 22, was taken off at half-time in Saturday's 0-0 draw with Brighton and left Hillsborough wearing a knee brace.
"Will picked up what looks like a medial ligament injury," Wednesday boss Stuart Gray told the club's official website.
"He left the ground in a brace and we will see what the scan shows."
Keane left Old Trafford to join the Championship side on loan until the end of the season in January.
He made five appearances for the Owls before Saturday's setback.
Keane was part of the United side that won the FA Youth Cup in 2011 and was on the brink of breaking into the first team under Sir Alex Ferguson after being handed his first team debut at the end of that year.
But a serious knee injury suffered while on international duty in May 2012 ruled the striker out for the entire 2012/13 season.
Keane has not made a first team appearance for United since, having spent time away from the club on loan at Wigan Athletic and Queens Park Rangers, making a combined 14 appearances in the Championship.
With James Wilson figuring in the first team, Keane has frequently featured for United's Under-21 ranks this season. Before leaving the club on loan, the forward had been hoping to force his way into Louis van Gaal's plans, believing his growing versatility could catch the Dutchman's eye.
Speaking to the club's website in December, Keane said: "I can play a bit deeper and link play up or play higher up as a lone striker. I've got a bit of flexibility there.
"I don't really have a preference. Sometimes I enjoy playing up front on my own, just leading the line, but also there are so many top strikers here, it's good to play up front with someone as well."