Midfielder Victor Wanyama has rejected Celtic's offer of an improved contract, according to his agent.
The 21-year-old Kenyan is under contract until 2015 after signing in the summer of 2011 from Belgian side Beerschot.
Wanyama's agent Rob Moore told STV: "Victor has informed Celtic the contract offer fell short of his expectations.
"There were a number of aspects that fell short - he turned it down."
Wanyama's performances have seen him linked with a move to the Premier League and Celtic reportedly rejected an offer for the midfielder in the summer.
Moore added: "He is very happy with the job he is doing at the moment. He is a great professional and his commitment cannot be questioned.
"But it doesn't take a rocket scientist to work out that he lost great earning potential in the summer (by not moving to England)."
what do you think?
Dave Peacock
I agree get the money, sadly that's how it is now. Gone have the days of building your team for the long term. You only have to look at the number of testimonal matches now, very few.
Roy Flynn
12:08am on 26/10/2012
he wants a five now let him.go if we get the correct offer