The third Test between Australia and England at the WACA Ground will start Friday, reports Xinhua.
Johnson has taken 17 wickets at an average of 12.7 in two Tests, claiming successive man-of-the-match awards in Brisbane and Adelaide as Australia took a 2-0 lead in the five-Test series.
The left-arm quick has bowled at speeds above 150 km/h and playing in his home Test should provide even more pace, McDermott said.
"I'd like to see - at his home ground, being in front of his adopted state, Western Australia - what the adrenaline does to his pace," McDermott told reporters Tuesday.
"Not forgetting that it's not all about speed. It's about making sure that the ball is in the right spot and that is what Mitchell has done since his return to international cricket, both in the shorter form and in Test match cricket."