Moore has just joined Clarke's backroom staff.
"It's fantastic and I think it's a great appointment," he told the WBA website. "He's a very, very knowledgeable man, with an inside-out understanding of the game.
"His CV speaks for itself and it's very impressive. He's a very likeable man and everybody will see that when they get to meet him.
"He's a great head coach to lead the club forward. West Brom finished tenth last season under Roy's stewardship and he did absolutely fantastic - that's why England head-hunted him.
"It's now time for us to get behind the new head coach and watch the club move forward.
"I can tell you, if I'd still been a player at West Brom, I would be looking forward to working with Steve Clarke.
"I'd be keen to work alongside him and draw upon all of his coaching experience. He has his finger on the pulse in terms of foreign players and I just think it's a wonderful appointment."