Celtic keeper Artur Boruc has revealed he has a clause in his new contract stipulating that he can leave if any club bids £10million for him.

The Polish star signed a new long-term contract last week after the likes of Milan and Arsenal were reportedly to be showing a strong interest in him.

The goalkeeper penned a three-year extension at Celtic Park, but he has now revealed he could still leave if a big offer comes in.

''If somebody will pay about £10million, I can depart. Both parties are satisfied," Boruc told Gazeta Wyborcza.

''Besides, I had proposals from other clubs in the newspapers only. I did not have concrete offers.

''I did not want to burn bridges with Celtic. If I have to part sometime, then it will be on normal principles.

''I am satisfied and signed this contract in order that the champions of Scotland profits from it also.''

Meanwhile, Celtic are being tipped to land Japanese starlet Koki Mizuno.

The 22-year-old international is rated as one of the finest young players in Asia and has been likened to Celtic's own Shunsuke Nakamura.

Celtic are reported to have agreed terms with Mizuno's club JEF United and could seal a deal this week.

TeamTalk / Eurosport