The agent of Celtic midfielder Victor Wanyama has revealed that the Kenyan has rejected the clubs initial offer of improved terms on an extended contract.
Wanyama has emerged as one of the hottest properties in Scottish football, a reputation further enhanced with his impressive display in Celtic's 2-1 loss to Barcelona in the Champions League.
His two goals in the 5-0 win over St Mirren last weekend came on the back of powerful display in Europe were he commanded the midfield and helped Celtic secure a shock 3-2 win over Spartak Moscow in Russia.
Querens Park Rangers made an approach for the midfielder in the summer, while Manchester United have been consistently linked with an offer for Wanyama in recent months.
The 21-year-old's future does now appear to be uncertain after the comments from his agent Rob Moore.
"Victor has informed Celtic the contract offer fell short of his expectations," Moore told the Telegraph. "There were a number of aspects that fell short - he turned it down.
'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 [when Celtic turned down QPR's approach]."
The Daily Mail has reported that Manchester United will travel to Scotland to watch the midfielder in action against Barcelona in two weeks time as they consider whether to make an offer in the January transfer window.
It seems this will not be the first time that Manchester United watch Wanyama in action as the Telegraph reports that the club have sent scouts to Celtic on numerous occasions this season.
Manchester United are not the only side said to be interested in the services of the powerhouse midfielder as Liverpool and Manchester City have also been paying close attention to his performances this season.
The Telegraph states that Celtic boss Neil Lennon rates the midfielder highly and has already turned down an offer from QPR which was said to be in the region of £8million.