Rangers are reportedly looking to bring Bruno Alves to Ibrox this summer.
Celtic boss Brendan Rodgers appears to have decided that Nadir Ciftci has no future with the Glasgow club.
Celtic have recruited remarkably well from abroad over the years.
Should Vincent Janssen leave Tottenham Hotspur in the summer transfer window?
Celtic striker Moussa Dembele has been linked with moves away from the club in the summer transfer window.
The Dutch striker signed for the Reds 20 years ago on the 9th March.
Celtic are due to meet Ibrox side Glasgow Rangers at Hampden Park later this afternoon.
Despite success, the Dutchman's Parkhead spell lasted just two years.
Fraser Forster and Pierre van Hooijdonk react on Twitter to Celtic's 3-2 win over Aberdeen.
The Scottish Premiership side ultimately decided against signing the Dutchman, instead going for another striker.