Newcastle United manager Steve Bruce could be forced to name four goalkeepers in his 25-man Premier League squad due to ongoing injuries.
With Martin Dubravka and Karl Darlow both sidelined, third-choice keeper Freddie Woodman has played the opening two games.
If Newcastle do have to register four goalkeepers in their squad, it could impact on potential new additions during the transfer window.
"It is unheard of," said Bruce.
"If we do a loan deal there is then no room in the squad without leaving somebody out. It's a difficult situation as well with finances."
The Magpies manager was speaking ahead of Wednesday's Carabao Cup round two tie with Burnley.