But the Gers striker reckons it will be a bad thing if the centre-half ever calms down.
Mohsni was needlessly ordered off in the SPFL League One match against Brechin City at Ibrox on Saturday.
He kicked the ball at a rival player in the second half to earn himself a second yellow card.
The French-Tunisian's red card meant his team struggled towards the end of a thrilling 90 minutes.
And Ally McCoist's side was lucky to win the game 2-1 and maintain their 23-point lead at the top of the third-tier table.
McCoist was fuming at the incident afterwards and has promised to speak to the defender.
But Light Blues hitman Clark believes the giant stopper will struggle to curb his volatile nature.
He said: "It was a stupid second yellow card. He was very apologetic after the game.
"But it's not just Bilel. We've all made mistakes before.
"He will learn from that and I'm sure he won't do it again.
"But you wouldn't want to take it out of him.
"You need that bit about him.
"You do get players like that sometimes. They are a bit different on and off the park, but you need that.
"When you cross the white line, you change. You want to win, you want to do well and you'll do anything not to get beaten.
"Most of us are like that and it's fair to say Bilel changes. But you need that."
Clark added: "He's been great this season. Him and big Jig (Lee McCulloch) have been different class and we will miss him when he through suspended.
"I think he's good enough to play in the Premiership with Rangers.
"This is a different level, but it's still a good challenge as everyone ups their game."
Clark is out injured at the moment with a broken bone in his foot.
Speaking as he helped launch the SPFL sticker book, he vowed to force his way back into the team soon.
He said: "The timing of the injury was frustrating because I was starting regularly and scoring goals.
"But I'll just need to bounce back. It's hard watching the team every week when you're out.
"I want to play in every game but the boys are doing alright and hopefully they'll keep winning."