The 19-year-old scored twice in Thursday's 6-0 friendly win over Tranmere Rovers.
Asked if he should play down Brewster's performance, Klopp said: "Why should I play down? I only don't want to talk after a game like that [about] the guy who scored two goals, like it always is in football, 'Oh, he is so good, he scored two!' I saw a really good game and Rhian is a fantastic player, that is the only thing I want to talk about. We can talk about Rhian, no problem, I don't want to play him down or it down.
"100 per cent, but again it depends on him as well. Divock Origi stays, obviously, which is good news; Bobby Firmino is still there; Rhian Brewster is a top striker, a top talent, and I am really happy.
"I told him already, he has an important role this year – but how important? Again, it depends on him and we will see. He has to play different positions as well because the centre is OK, wing I think is possible, and then we will see how we can line up. There will be opportunities for him, I am really sure."