Lucas impressed coach Mano Menezes in their 3-0 win over Barcelona B.
"I found it a very productive week of practice. Mano had the opportunity to learn more about the group and we were able to mingle more," said Lucas.
"I think I did a good job and was able to show that I've evolved defensively in the time I've been in England. The marking is one of my main roles in the tactical squad, and to push the ball out with quality from defense.
"But whenever possible I will try to help the attack. I hope to be useful again in other opportunities."