Solskjaer began the 4-1 win with midfield pair Paul Pogba and Donny van de Beek, with the latter not getting on the St James' Park pitch until 14 minutes from the end.
The United manager was pushed about the Dutchman afterwards and responded: "The point is that the team must be in balance.
“We won with 1-4 and you ask questions or why I did not start a certain player, Van de Beek in this case?
"He will have a very good impact on the team. I think you saw that today too. He also plays in a neat and smart way during training. I don't think he once lost the ball."