Andreas.......:
He can't! It's a draw...................
After 1.Nc6 the 1...Nf3 is forced. After 2.Nb4 the 2...Ne5 is again forced. And then :

• 3.Rb8 Nc3 the 4.Nf6 is forced. And after 4...Nb5 Ne4 is again forced and then no Knight can move!
  
• 3.Nf6 Nc3 the 4.Rb8 is forced. And after 4...Nb5 Ne4 is again forced and then no Knight can move!

There are other similar variations (2.Rb8) that lead to the same result.............