Liverpool boss Jurgen Klopp admits Fabio Carvalho has settled in quickly.
The midfielder arrived this summer from Fulham.
Klopp said: "Absolutely, but last night (against RB Salzburg) he was tired as well, you could see that. He's a technical player, he's incredibly creative and we will have a lot of fun with him definitely.
"That's a good example because Fabio last night was OK but can be much better, and that's just how it is. You need all these kind of things, you need these little lows as well.
"I'm really happy with him. He showed up, he's in the middle of the team after a short period of time and that's a good sign for the team but for him as well. So, he's an open, young man and a top addition for us."