The young winger is catching the eye in Europe this season.
Pardew said: "What Sammy has something special in his feet. There aren't too many you can say that about. He needs to understand the game and if he grasps that, then he can be a really good player for us.
"The brothers are the best well brought-up kids you could ever imagine. They are a model for any family in the city about how to bring up your sons.
"They are so well mannered, so giving and caring about the group and other people."