United appear to have missed out on Hertha Berlin star Pierre-Michel Lasogga after failing to match his wage demands.
Now sources in Germany say that Wolfsburg are considering a swoop for Diafra Sakho.
Newcastle have been joined by Borussia Dortmund, Schalke 04 and Marseille as clubs interested in signing the striker in the last 12 months.
Sakho has one year left on his current deal and could be available for around £2million.