Rennes have contacted Rosenborg to declare their interest in midfielder Alexander Tettey.
Tettey attracted the attention of clubs across Europe with a series of impressive displays in the UEFA Champions League last season.
Rennes now appear to be leading the chase, although they have yet to lodge a firm offer with Rosenborg for the Ghana-born Norwegian.
"We got a phone call from Rennes just before the European Championship," Rosenborg sports director Erik Hoftun told Adresseavisen.
"They enquired about Tettey and if he is for sale.
"I asked them to contact us in writing, but we haven't heard anything more."