Ferguson has admitted that cover for Patrice Evra at left back maybe the only position he will strengthen in the January transfer window.
And a mid-winter trip to Russia could be on the cards with Lokomotiv Moscow's £10m-rated versatile defender on the Reds radar.
Though left back is the berth that Ivanovic could be brought in to fight for, he would also be added cover for Nemanja Vidic and Rio Ferdinand.
The Serb can also play at right back comfortably and with Gary Neville's long term future still not nailed down it would be another plus for any potential swoop.
