England forward Jamie Vardy is "looking doubtful" for the World Cup quarterfinal against Sweden on Saturday after suffering a groin strain having come on as a late substitute in the round of 16 victory over Colombia, manager Gareth Southgate has said.

Vardy was unlikely to be ready to face the Swedes after sitting out training on Thursday, Southgate added.

"Vardy didn't train today, so is looking doubtful for this game," Southgate was quoted as saying by Sky Sports on Thursday. "But we'll know a bit more tomorrow (Friday), really. The others were all on the pitch. We didn't do a lot.