Emilio Izaguirre's agent insists the left-back wants to honour his contract at Celtic and has described reports of a move to the Premier League as unrealistic.
The Honduran has claimed that English champions Manchester United were interested in a deal in January, while Liverpool have also been linked with a move.
But Celtic manager Neil Lennon said on Sunday that he hoped Izaguirre, and Beram Kayal, would sign an extension to his current deal, which expires in three years.
And the Parkhead boss has now been boosted by the words of the representative of Scotland's double Player of the Year from last season.
Izaguirre's adviser, Marco Tulio Suazo, said in the Daily Record: "I can tell all the fans of the club that Emilio has the sole mission of not lowering the level that made him the best foreigner in the Scottish Premier League.
"Emilio has the plan of fulfilling the contract that still binds him to Celtic as an alleged sale to England, at this moment in time, is not a reality."