(Reuters) - West Ham United defender Carl Jenkinson suffered a "significant injury" to his left knee during their 2-2 Premier League draw with Manchester City, the club said on Tuesday.
The 23-year-old, who is on loan at West Ham from Arsenal and has made 23 appearances for the Hammers in all competitions this season, sustained the injury when he conceded a penalty for a tackle on Sergio Aguero during Saturday's match.
"Unfortunately, it appears that Carl has suffered a significant injury and he will be assessed by a specialist in central London on Wednesday," West Ham said in a statement on their website (www.whufc.com).
Jack Sullivan, son of West Ham's co-chairman David Sullivan, said on Twitter that the injury would rule Jenkinson out for the season.
"Carl Jenkinson's injury is far more serious than we thought," he said.
Reporting by Simon Jennings in Bengaluru Editing by Toby Davis