Borussia Dortmund are ready to test Crystal Palace's resolve to keep Wilfried Zaha with a £44million bid for the winger.
The Bundesliga leaders have money to burn after allowing Christian Pulisic to join Chelsea for £58m.
Thorgan Hazard, brother of the Blues forward Eden, is also a target for Lucien Favre, however, according to Bild, the German outfit are keen on Zaha as well.
They claim that there has already been contact made by Dortmund in a bid to sound out the Ivorian international's interest in joining.
Zaha has been an integral part of the squad at Selhurst Park since rejoining the club following a disastrous spell at Manchester United.
His goals this season have dried up however, since scoring three times in his first four league appearances of the campaign.
He has not found the back of the net since netting the winner at Huddersfield in September.
Palace chairman Steven Parish has already talked about the player's future this month, insisting that the 26-year-old is going nowhere.
However, he has left the door open for the player to move in the future.
'We have got a long history with Wilf. He loves the club and we love him. But of course people want to do well in their career over time,' he said.
'We have to look at it. We have to look at the right circumstances for Wilf, the right circumstances for the club.
'Right now, I know he is 1,000% committed to Crystal Palace Football Club. He doesn't think about anything else.'