The German giants claimed an emphatic 4-1 victory over RB Leipzig in the DFB Pokal final, with the Dortmund duo both bagging braces.
Sancho and Haaland have both been linked with a move to Old Trafford this summer, with the former the most likely to make the move.
The England international has scored 16 goals in all competitions as well as registering 19 assists and issued yet another reminder of his talent last night.
Speaking after the match, the pair were pictured together before Haaland began to praise his teammate.
“He’s the man, he’s the man. This guy is the man,” the Norwegian said while pointing Sancho.
Reacting to the video, one United fan said: “Man Utd licking their lips.” Meanwhile another supporter added: “Maybe Haaland is coming to United. Maybe Sancho is coming to United. Maybe it’s both.”
United missed out on signing the former Manchester City academy product last summer, having seen a bid worth £91.3million rejected.
Sancho’s price is now expected to have fallen to roughly £77m due to the financial complications caused by the coronavirus pandemic.
But despite a lot of clubs being under pressure to sell star players this summer, Dortmund CEO Hans-Joachim Watzke has insisted that is not the case for the German side.
“When Covid-19 struck, we had no debt. Not one euro. Because of that, it is a comfortable situation. We do not have to sell a player. That is important,” he said.
“The rich clubs in the world, they must know when they want a player from Borussia Dortmund there are two possibilities. The first is that I tell them they have no chance. Other times, I will tell them ‘this is the price’. Then they must know this is the price. It is not another price.
“If an extraordinary offer comes in, we will discuss it with the player and his agent, as always.
“I do get tired of the rumours. Last summer, everybody in England, everybody in Europe, every journalist told the public ‘Jadon Sancho will play for Manchester United or wherever’. But he is still playing for Borussia Dortmund.”