The versatile striker has two goals in as many games for his country.
And despite being predominantly a left winger, Gakpo is becoming increasingly accomplished as a No9.
He has made no secret of his desire to play at a higher level.
And a deal could be struck with PSV fairly quickly - for the right price
However, he is valued at over £100million by Milan.
And Leao is yet to get a proper run through the middle for either club or country.
It means Gakpo is the more likely of the two to join United in January.