Marcus Thuram of Borussia Monchengladbach is being watched by Manchester United.
The 25-year-old France international can now speak to foreign clubs because his contract expires in the summer.
United will probably only be able to make loans during this time, though.
To maintain their recent rise under him, United needs a new forward, as Erik ten Hag has been keen to emphasise.
For the first time since early September, with their victory at Wolves on Saturday, they have now won three straight league games.
Ten Hag stated that the team “had to set the limits high” in their search for new players prior to the trip to the West Midlands.
“It’s always difficult. Strikers are expensive, especially in the winter. But you have to set the limits high. We’re looking for it. We need to be creative and do everything we have in our power to get the right players in, who are fitting in the balance,” he said.
“It’s about timing and availability. It’s about so many circumstances playing a role in that. It’s a long period and the window hasn’t even started.”