Lascelles admits Benitez is the best thing about the club this season.
Speaking to Four Four Two, he said: “He's always correcting small things with me and talking to me.
“He will tell me to watch clips of various players to improve my game. He's by far the best manager I've worked with - he's very easy to talk to and his door is always open.
“You can tell he's managed at the highest level, and every day it's like playing in front of a new manager because he has authority and commands respect immediately. “Players want to impress him in training because of his stature and what he's achieved during his career."