Barcelona are tracking Red Bull Salzburg defender Dayot Upamecano.
The French stopper, 18, has broken into the first team this season and caught the eye of clubs across Europe.
Arsenal, Bayern Munich and Juventus have maintained a watching brief for Upamecano since his days with Valenciennes.
Salzburger Nachrichten says Barca are also keen and weighing up making an immediate move for the teen.
A starting price of €2.5 million has been mooted.