Newcastle boss Glenn Roeder says he will not risk Emre's long-term fitness by rushing him back to action.
Newcastle's form has picked up in recent weeks to the extent that they have a chance of snatching a Uefa Cup place.
The Magpies have three game remaining, against Birmingham, West Brom and Chelsea, and nine points could be enough to secure a spot in Europe.
Roeder has injury worries at present, with Alan Shearer set to miss out, Lee Bowyer struggling with a hamstring problem and Scott Parker out for the season with glandular fever, and Emre's groin complaint is giving him some concern.
The Magpies chief will be eager to field a strong side against West Brom at the weekend, but will not rush Turkish star into action.
"Emre is a proper professional and after going back to Turkey for treatment at the weekend he has kept in touch," Roeder told the club's website.
"He says he is a lot better and that he is desperate to play against West Brom on Saturday, but his chances cannot really be any better than 50-50."
Bowyer, meanwhile, has been banned from driving for 42 days and fined £650 after admitting speeding at almost 100mph.
He was caught by an unmarked police car driving his Porsche 911 at 99mph on the southbound A1 near Morpeth, Northumberland, in July last year.