Jack Grealish is being assessed on a daily basis after being told his shin injury requires more rest.
The Aston Villa captain was scheduled to return in the win over Fulham on Sunday.
But he was pulled out of training the day before after experiencing discomfort in his shin.
It meant he missed a seventh successive game and Villa are now not putting a time-scale on his return.
The win over Fulham leaves Villa ninth in the Premier League.
Dean Smith’s side are set for a solid season after only just staying up on the final day last term.
There is no pressure at Villa to rush Grealish back until he is fully fit.
England have already advised that the ace, who has six goals and 10 assists in the Premier League, is likely to be in their squad for the Euros.
The star, who has five caps, now has a chance to let his injury fully heal and be fresh for the end of the season and international duty.
Most pundits agree the star should be included in the England squad despite his injury.
Jamie Carragher and Gary Neville agreed on Sky’s Monday Night Football.
Carragher said: “Grealish has to go. He is a special talent.
“There is no doubt in my mind that Grealish doesn’t go.”
Neville agreed: “He impressed when he went into the squad. I would definitely take him.”
It is likely to be a big summer for Grealish with Manchester City and Manchester United both keen on him forcing Villa to value him at over £100million.
Their respective managers Pep Guardiola and Ole Gunnar Solskjaer are huge fans of the 25-year-old.
Grealish is represented by the Stellar Group whose chief Jonathan Barnett predicts some huge transfer deals this summer.
Barnett said: “I’m expecting three or four very big deals of my own that will break a lot of records. Hopefully, they’ll come about.”
Grealish is in demand off the field too as he is in the final year of his boot deal with Nike and has Adidas, Puma and Under Armour all chasing him too.