Clarke, who oversaw a mid-table finish during his first season with the club, had been one man short after assistant manager Marcus Stewart decided to quit in favour of a potential role nearer his family home in Bristol.
Stewart, a well-travelled former striker with over 650 professional appearances and almost two-hundred goals to his name, arrived at the Banks’s Stadium last summer alongside Brian Dutton.
However, following the recent confirmation of the club's 'Released and Retained', Clarke will once again have a wealth of experience alongside him in the Saddlers dugout, with Sadler still keen to contribute on the pitch.
The gaffer, who brought former Bristol Rovers colleagues Stewart and Brian Dutton with him when he signed for the club last summer, paid tribute to Stewart before confirming his backroom team requires no further additions.
Chatting to the Express & Star's Walsall correspondent Liam Keen, Darrell said; "Marcus and I worked well together over a period of time, he’s a very good coach.
"We wish him all the best and he’s obviously made his decision for family reasons. We move on and we’re delighted to promote Mat Sadler to player/coach and Brian Dutton will obviously be my assistant.
"I have Maik Taylor, Mark Bradley, Marc Czuczman – so we have a decent backroom team. There’ll be no more changes to the backroom team now. As well as wishing Marcus all the best, we move on."