Celtic have been quoted £5million to sign AEK keeper Vasilios Barkas, according to a report.
The Premiership champions are exploring their options with a deal for Fraser Forster currently dead in the water.
The Daily Mail report Celtic enquired about Barkas earlier this week.
It’s said Leeds United are also interested in the 26-year-old Greece international.
Record Sport revealed last week week that advanced talks had been held with former Manchester City keeper Joe Hart, who is currently a free agent following his release from Burnley.
Neil Lennon is also considering the former academy graduate David Marshall, whose future has been thrown into sudden uncertainty by Wigan's plunge into administration.
Speaking to the media on Thursday, Lennon's new No.3 Gavin Strachan revealed he's been kept in the loop by head of recruitment Nicky Hammond and goalkeeping coach Stevie Woods.
Strachan is confident the club will land the right man.
He said: "I haven't been here long enough to really get a grasp on recruitment. But there is work going on behind the scenes.
"We just have to have faith in the guys making those calls.
"Speaking to Stevie Woods and Nicky Hammond briefly, they're certainly working very hard on that side of things, I know that."
