Robson had hoped to persuade the Denmark international to join his Coca-Cola Championship side however, the 31-year-old has two years remaining on his contract at Celtic Park and is among the club´s high earners.
Robson said in the Daily Record: "I wouldn´t have thought it is going to happen now. I was prepared to wait but I just don´t think he is too keen to come. I just don´t think he can make his mind up and he has been stalling on things."
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