Newcastle striker Alexander Isak praised Sandro Tonali after their thumping win against Aston Villa.
Isak struck twice in the 5-1 win, with Tonali scoring on debut.
He said, "Yeah, I think prior to his arrival we all knew his quality and today, it is not easy to come to a new league and make such a debut as he did.
"The same as Harvey [Barnes], so really impressive.
"We all know the quality we have in the squad. You always want to play good and the sooner the better. I am happy for the team and those players."