Sporting Lisbon defender Ousmane Diomande is emerging as a key target for Newcastle.
The St. James' Park club are aware that a defensive injury crisis may derail their season.
Manager Eddie Howe is set to splash the cash in the January transfer window.
Per The Sun, the Sporting CP star is one who the Magpies could sign for a set fee this winter.
He has a release clause in his contract set at 70 million, which the English club may find steep.
Newcastle are hoping they can negotiate down the fee, but Sporting are not under serious pressure to sell.