The 27-year-old, who joined Celtic in 2005, was this weekend linked with moves to both Arsenal and AC Milan.

But he told arturboruc.com: "I am very grateful to the Celtic management for putting their trust in me.

"That's why I accepted the new contract offered to me and I have extended it for three more years."

Celtic chief executive Peter Lawwell confirmed the deal for the player first signed from Legia Warszawa.

"Talks have been ongoing for a while and we are delighted that Artur has decided to sign," he told BBC Sport.