While Clarke has already made seven additions this summer, as it stands the average age his squad currently sits at just 22-years-old.
But the boss vowed experienced players will be amongst the additions he makes before the season starts.
He also confirmed one signing is likely to be made today.
"We need more experience throughout the squad," Clarke said.
"I think we have got some really good, hungry, young lads and some good seniors as well. But we need a few more seniors.
"They will be coming through the door. We will get the experience that is needed to be successful in League Two. That will be done.
"But we will also keep working to make sure we are improving players and pushing the club forward."
Clarke has a lack of options out wide with no wingers currently on Walsall's books.
And the boss said he will be looking to bring in widemen whilst also outlining the other areas he wants to strengthen.
"I’d like to get a couple of players in before we go to Poland next week, " the boss said when speaking after the Saddlers friendly at Alfreton on Saturday.
"I’d like to think there will be one signing coming in on Monday and hopefully there will be one or two more before we go to Poland.
"I’d like a couple of wide ones as well because we haven’t got that option yet. I need a couple of centre-halves, two wide players.
"And I'd like another central midfield player and another centre forward minimum. Then with a couple of wide players in the mix as well we will have a healthy squad."
Clarke left out strikers Morgan Ferrier and Mitch Candlin for the trip to Alfreton so he could run the rule over trialists Liam McAlinden and Alex Nicholls.
But he said both Candlin and Ferrier will feature against Leamington tomorrow.
"I just wanted to look at the two trialists at Alfreton," he added.
"They (Ferrier and Candlin) will get 45 minutes on Tuesday.