Republic of Ireland international Aiden McGeady has committed his long-term future to Celtic by signing a new five-year contract with Gordon Strachan's side.
The 22-year-old, who was voted Scotland's Player of the Year by his fellow professionals last season, has already made over 150 first-team appearances for the club.
Chief executive Peter Lawwell told the Bhoys' official website: "This is wonderful news for the club and our supporters.
"Aiden's performances in recent seasons have made him the outstanding player in Scottish football and clearly we're delighted that he's committed his long-term future to the club.
"Our priority has always been to try and keep our best players at the club and the board is delighted to support Gordon (Strachan) in his plans for the future by securing Aiden on this long-term agreement.
"It's particularly satisfying that Aiden has become such a success having come through the ranks of our youth development programme."