Ritchie De Laet joined Royal Antwerp on loan from Aston Villa in the January transfer window.
De Laet returned to Antwerp in the January transfer window on a loan deal for until the end of the season.
According to HLN, the Belgian club find the transfer fee of securing the services of De Laet on a permanent contract too high.
It has also been reported that De Laet is willing to take a pay-cut from his €1.5m-per-year (£1.31m) salary, but there is still a gap between what the 29-year-old defender wants and what Antwerp are able to pay.
De Laet has struggled to make an impact at Villa, and it would be best for the former Stoke City prospect if he leaves the Villans in the summer transfer window – if not for Antwerp, then for another club in England.