Celtic have enquired about Freddie Woodman during discussions with Newcastle United over Kristoffer Ajer, Football Insider has learned.
Woodman, 24, has just completed a second outstanding season on loan with Championship club Swansea City, who lost in the play-off final to Brentford.
A recruitment source has told Football Insider that Celtic are among a cluster of clubs who are keen on signing the former England Under-21 international.
He has been mentioned in discussions with Newcastle about their interest in centre-back Ajer.
The defender is keen to quit Parkhead this summer with a year left on his contract and has snubbed attempts to secure him to an extension.
A part-exchange deal is a possibility, although Newcastle would prefer a loan to a permanent sale.
Celtic are in the market for a new number one after difficulties in replacing 2019-20 loan sensation Fraser Forster.
Vasilis Barkas had a wretched debut campaign while Scott Bain struggled to convince he is the long-term answer.
Woodman is behind Martin Dubravka and Karl Darlow in the pecking order at Newcastle, whose goalkeeper roster is well stocked.
But the younger man has long been regarded as a stellar talent and has made immense progress during two seasons on loan at Swansea.
It is likely Newcastle will give the green light for Woodman, who has a contract until 2023, to go on loan again next term.
He has made just four appearances for the north-east giants in his eight years at the club.
Most of his time has been spent on loan, with his lengthy Swansea spell following previous loans at Aberdeen, Kilmarnock, Crawley Town and Hartlepool United.