Newcastle boss Eddie Howe has again rejected claims of time-wasting tactics.
Brentford manager Thomas Frank accused Howe of using "dark arts" during Newcastle's win last weekend in London.
The Toon manager responded on Friday: "I don't even know what dark arts are! If someone could explain it to me that would be great. I've said many times we just try to win but within the laws of the game.
"It shouldn't [impact refs]. They should just referee the game as they see. As I say, someone needs to sit down and explain to me what they are. Erik [ten Hag] made those comments quite clear about time-wasting but we don't want that in any game. We want to try impose ourselves with the ball in play.
"I understand the statistic about our ball being in play the least but that could be down to a number of reasons and not down to use wasting time."