Coutinho has returned to the scoring trail for the Reds after netting a free kick in the 3-2 win over Leicester City on Saturday evening, while also setting up another.
After putting his summer disruption to one side, when handing in a transfer request to push through a move to Barcelona, Gerrard now looks forward to seeing Coutinho terrorise opposition players in a Liverpool shirt.
"He's impossible to defend against; when I used to train with him I'd hate it when I was on the opposition five-a-side team," he told BT Sport. "I wouldn't go near him and sometimes i told him to keep away from me because he can embarrass you.
"If he stands you up he can go both ways. He's got such a low centre of gravity, he's so sharp, so quick and he's two or three steps ahead of defenders - he's so, so clever."
Coutinho has featured four times for Liverpool since recovering from a minor back complaint earlier this month, but he has yet to complete a full 90 minutes.