The former Wigan defender has been linked with a move from Groningen to the Scottish side.
“There are many clubs who are interested from Scotland, France and Germany,” he told Swedish television show Fotbollskanalen.
“Celtic have had me watched several times.
“Celtic have currently shown the most interest and I am certainly interested.
“Certainly, there is a difference between interest and concrete, but it looks promising.
“My contract has a term of two years at FC Groningen and must be purchased.”