I do agree that Lucas is not a perfect solution for our midfield, and that we would likely improve with a replacement brought in. But he can still be a valuable squad player for us for 2-3 more years. He's smart, he "gets" Liverpool and its supporters, by all accounts he's an excellent mentor, and he's capable of doing a decent job if not overexposed. We can't have 20 year old kids everywhere on the pitch all the time, talented though some of them may be. His experience is valuable.