Clarke, who took charge of Walsall from 2019 to 2021 before leaving for rivals Port Vale, had centre-back Sadler as part of his squad when he first joined.
In 2020 Sadler moved to become a player-coach and worked alongside Clarke before the Saddlers boss moved into coaching full time.
Clarke is now back at his beloved Bristol Rovers, who he achieved promotion from League Two with in 2015/16, and although Sadler is fond of his former boss, he is keen to keep the focus on the pitch and not the dugout.
“I’m not for one second going to say me and Darrell are similar types of people, because we’re not, but I do always admire the infectious attitude and positivity that Darrell brings across to his group,” Sadler said.
“Anyone who spends any time in Darrell’s company enjoys it. That’s the stuff where you can see why he’s had such a good career.
“It’s always important to be me and that’s what I’ll take forward, but as a man he was someone who worked very hard, was extremely passionate and wanted to win.