Morgan Gibbs-White is expected to be fit for Nottingham Forest's crucial trip to Ipswich.
The England international missed Sunday's 1-0 defeat to Arsenal with a muscle injury having missed training in the week.
Gibbs-White suffered the problem in last week's loss at Crystal Palace and Forest missed his invention as they slipped to a harsh defeat against the Gunners.
It left them in the Premier League's relegation zone - and goalless and winless in the top flight - going into Friday's trip to Portman Road.
"He was very close to playing and he said he's fine but he felt it a little bit," said Glasner.
"In a few situations he felt his muscle and then I decided not to play him. I didn't want to take any risk and we can't allow to lose him because if it was a re-injury it was four, five, six weeks.
"That's why I decided not to play him. I think all the players did very well and I expect him being back for the Ipswich game."