Artur Boruc has revealed that he will be allowed to leave Celtic if any club bids £10million for him.
The Polish star signed a new long-term contract last week as the likes of Milan and Arsenal showed a strong interest.
The goalkeeper penned a three-year extension at Celtic Park, but he has now revealed that 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.