Again- can't help but be impressed by his attacking game. Especially the vision he has and the ability to find the right weight when looking for the through ball. He looked like a demolition ball today as well- his mobility is a good asset as is his growing strength.
In defence, apart from a wondefully timed sliding tackle which I first thought was Masch, I didn't see him much. I would have thought he'd drop back to help the defenders out in possession but he was very much in an advanced position (far advanced than Xabi would have been). If Rafa told him to do that, it indicates that change in 4-2-3-1 to perhaps a 4-3-3 (many times I saw him much closer to Gerrard than Masch when our CB/GK had the ball. Carra had to bring the ball/pass it out quite a lot and he wasn't that great- but you can see Agger being much better. Hopefully Mascherano picks up on these things more and instead of just covering the defenders, he provides them with the short ball and moves it on to the attackers. If Lucas has got a more 'box-to-box' role, then he'll need to look to do the same- drop deeper when one of our defenders has the ball to give them a better/easier option than the increasingly frustrating long ball.
If Lucas starts a lot of games next season as an attacking midfielder, I can see him doing very, very well. It doesn't take a lot of imagination to see that Lucas has assists and goals in him.