Manchester United are showing an interest in CSKA Moscow's Serbian defender Uros Cosic, a player that the Russian club believe will be better than compatriot Nemanja Vidic.
Cosic is just 17 but has already been tipped for stardom by the CSKA hierarchy and the club are keen to ward off any interest in the defender.
President Yevgeni Giner claims United have made repeated approaches for the player, possibly with their extensive injury problems in mind.
"I must stress that we would like to keep Cosic," Giner told B92. "I have not seen such a great central defender before, not to mention that he is only 17. But Manchester United would also love to have him.
"They have already made several attempts to approach me about him, asking if I was ready to negotiate. They can see - the boy is going to grow into a bigger star than Vidic."
United have also been linked with Simon Kjaer of Palermo as well as Sol Campbell, although Sir Alex Ferguson has firmly ruled out a move for the former England international, who is available on a free transfer.