Odsonne Eduoard is set to move to Crystal Palace after Celtic agreed a fee of £15m with the English Premier League side.
The striker, who is in the final year of his contract, joined the Parkhead side on loan from Paris Saint Germain in 2017, before making the move permanent the following year in a £9m transfer.
STV understands PSG will be entitled to 40% of any profit Celtic make on the player’s transfer to Palace.
Eduoard, who started for Celtic in their 1-0 loss to Rangers on Sunday, has been keen on a move to the EPL.
The deal is expected to be finalised on Tuesday, the final day of the transfer window.
Meanwhile, Ryan Christie is set to move to Bournemouth. The midfielder is in the final six months of his Celtic contract, but he,too, is set for a move away from Parkhead