Celtic defender Kristoffer Ajer has been highlighted as a January target for French side Nice, Goal understands.
The Ligue 1 side are in the hunt for a new centre-back after seeing Brazilian veteran Dante suffer a cruciate ligament injury in November.
Nice confirmed on Friday that the 37-year-old has signed a contract extension, but he could be out for the remainder of the campaign.
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"Yes, we are at work to recruit a defender," director of football Julien Fournier told RMC Sport.
"It's easy to take a player but we are looking for specific characteristics and not just adding a player to the team.