Striker Marc-Antoine Fortune has travelled to Glasgow for talks with Celtic, his French club Nancy have revealed.
Celtic are one of number of club keen to secure Fortune's services, with Hull City, Fulham, West Ham and Portsmouth also said to be interested.
Parkhead boss Tony Mowbray worked with the Frenchman during his loan spell with West Brom next season.
Nancy announced on their official website that Fortune was in Glasgow to "visit the Celtic set-up".
But general manager Nicholas Holveck added: "Any decision has still to be made."
Nancy are thought to have accepted a number of bids of around £3.8million for Fortune.
Nancy also confirmed that Celtic were interested in midfielder Landry N'Guemo, who is being tracked by other clubs.
Mowbray last week admitted he was hoping that the lure of Celtic and their personal relationship would encourage Fortune to snub a more lucrative deal in England.
"My advantage is I have worked with him - he knows me as a coach, I know his strengths and weaknesses," he said.
"I don't think it's any secret that the English Premier League clubs get £30-35million each year off their television deals and the Scottish clubs don't.
"But what I do know is we have a huge pulling power from the support and the history and tradition of this club.
"Believe it or not, there's a lot of footballers who play for the love of the game as well as the money that goes with it.
"To play for a club fighting for championships, hoping to compete in the Champions League is a much bigger draw than taking the money sometimes and going and fighting against relegation and playing in a league when there are only really four teams who can ever compete to win that league."