Aston Villa midfielder Jack Grealish is carrying a calf injury.
Grealish has been in outstanding form and England coach Gareth Southgate watched him on Saturday in his side's 3-0 defeat at Manchester City after he had scored three goals in his previous four games.
But Grealish was substituted in the 84th minute and the problem that forced him off is causing concern for Villa manager Dean Smith.
The 24-year-old required crutches on Saturday, as a precaution, to avoid aggravating the injury and is being monitored closely by Villa's medical team, says the Daily Mail.
The early indications are that Grealish will be sidelined for two weeks, which would rule him out of Wednesday's Carabao Cup tie against Wolves as well as Premier League fixtures against Liverpool and Wolves.
There are concerns, however, that Grealish could be missing for up to four weeks.
