Crystal Palace are pushing to sign France U21 international striker Odsonne Edouard from Celtic.
The Eagles lodged an offer worth up to £15million at the weekend, as reported by Sportsmail, and want to try and get a deal done before tomorrow's deadline.
The 23-year-old played in Sunday's Old Firm derby and has just one year left on his contract.
Edouard is willing to see out his contract if he fails to get the move he wants but Celtic have been holding out for their £20m valuation as they owe a 40 percent sell-on to his previous club, Paris St Germain.