Artur Boruc has reiterated his desire to leave Celtic in the summer The goalkeeper will look to take advantage of the precedent set by Andy Webster and engineer a move away from Scottish football with one year remaining of his existing four-year deal.

Webster, currently on loan at Rangers from Wigan Athletic, is awaiting a decision from the Court of Arbitration for Sport after being ordered to pay Hearts £650,000 for breaching his contract a year early "without just cause" when he moved to the English Premier League side in the summer of 2006.

Hearts appealed to take the case before a three-man panel in Switzerland in October, claiming they should receive more than £4m for the defender while Webster's legal team argued in Lausanne that the player was entitled to leave Tynecastle threequarters of the way through his four-year contract under Article 17 of FIFA's transfer regulations.

Boruc has told Polish journalists he is closely monitoring the outcome of the Webster case in the hope he can implement the same ruling.

Celtic currently rate the goalkeeper in the £10m bracket but could only expect to receive somewhere in the region of £1m should Boruc decide to enforce Article 17and make a similarly early exit from the Scottish champions.

The 27-year-old said: "I have decided I am going to leave Celtic in the summer. Celtic want more than £10m for me but I think it is too much. There is much to look forward to with the Champions League in spring and then the European Championships in the summer but many things can change and I have to see what is best for me."

Boruc also revealed his satisfaction with the outcome of a recent knee operation and hopes to return to the Celtic team next month.

He added: "The operation went very well and I should be back next month. I cannot say for certain that I will be back for the game against Rangers on January 2 but I will try really hard to be back in time because I enjoy playing in these games."