Sancho expects Brewster to follow him into the England squad.
He said, "I feel like he can do it. I have played with him. I know how good he is. He causes defenders nightmares.
"He is a great player. I feel like he is at the right club, he is developing and he is still so young. He is developing and that is the main thing.
"Just give him the time and patience and you will see. I played with him a lot for England and he scored a lot of goals for us and I have assisted him. It's a good thing for us to have someone like him.
"I knew the penalty was going in as soon as he put the ball in his hands. I've seen him do it all the time, top corner. I just knew what was coming.
"He spends time after training, practising and practising his technique. I always used to see him out on the pitches. Penalties, free-kicks, he took them all. Playing for Dortmund, I couldn't say what was going to happen but I knew. He is very focus and all the time he is training lots."