The Egyptian was again on the scoresheet in victory at Hertha Berlin yesterday.
Wijnaldum declared: "He's really flying. To be fair I didn't see his goal because I was in the changing room but I heard it was a good goal. He's settled in real good, he's not only a great player but as a person which makes it easier for him and for us.
"It's always good to play with good players but also when they are quick. You see that with Sadio (Mane) and Mo. It makes it easier for us because the opponent has to beware of two quick players and that makes space elsewhere in the team.
"Everyone can make profit from the quality of these players."