The midfield setup suited him today, like the setup we had when Alonso was still around. Two at the base it seems suits Lucas a lot more, the less he has to do laterally the better he reads the game. So often you see him coming out from the back to challenge for the defensive headers, getting ahead of Lukaku on so many occasions. But it's all about his vertical game, his anticipation suits him better when he doesn't have to turn or step back, he is still the player who likes to play on the front foot, and he's good at it.
I think Klopp will probably reassess his view on him now, his post match comments were generally positive. With injuries now to Mane, Henderson and Lallana, he'll definitely be getting the minutes. As long as Can improves his box to box game, they will complement each other well.