The European club are said to be preparing a €30 million transfer bid for the struggling Chelsea player.

Chelsea are one of the clubs interested in signing the €60 million-rated Italian international centre-back.

Chelsea have finally announced their new summer signing, making the transfer official after a long wait.

According to the Mirror, Manchester United have been quoted £35 million to sign Nkunku. That will represent a big loss on a player Chelsea signed for £52 million two years ago.

It has been suggested that Barcelona would be ready to let the Chelsea target leave if a €50 million offer comes in.