"He can become one of the best midfielders around. He is so good mentally and in terms of ability," said the Liverpool boss.
"Look at his performance on Tuesday. There were times when he was determined to make key tackles and he's always working for the whole game.
"When we have Momo, Xabi and Gerrard available, we have the right balance of skill and energy, pace and power. They bring the best qualities out of each other. When they're on the pitch together, we have everything you need in a midfield.
"Momo was training all week with the special glasses. But during the game they began steaming up, so he had more problems.
"He decided to take them off but wanted to continue playing. This shows how much courage the boy has.
"What pleased me most about Tuesday was seeing him playing again."