Gillingham manager Peter Taylor expects goalkeeper Stuart Nelson to be out for at least two months.
The 32-year-old, who was an ever-present for the Gills last season, injured ligaments in his thumb on the opening day of the new campaign.
Taylor told BBC Radio Kent: "It is about making sure he is confident and the ligament is strong after that.
"It could turn out to be longer. It is a blow for us and Stuart. We had some almighty bad luck for that to happen."
Taylor is considering bringing in another goalkeeper on loan but will not be rushed into a quick decision.
|Peter Taylor calm on new loan goalkeeper|
|"I certainly won't be bringing someone in who doesn't have a chance of starting. I want someone to push Glenn all the way or take the shirt."|
"I'm still looking," the 61-year-old said.
"Thankfully we brought in Glenn in the summer because I wanted what I regard as a very good number two and also someone to push the number one.
"Glenn fitted that bill perfectly.
"He came in on Tuesday night, made a fantastic save and came for a cross right at the end, when we were under pressure, and took it superbly.
"There is less panic now.
"Last year we had a couple of younger ones on the bench. Could they have handled three or four matches in the league? Probably not - it would have been a big doubt.
"I haven't got to rush because I have got some experience here."
Taylor is reticent to bring in another keeper for the sake of it.
"It depends how the calls go. I want as much competition for every place.
"I certainly won't be bringing someone in who doesn't have a chance of starting. I want someone to push Glenn all the way or take the shirt."