Clarke, who recently secured the future of sought-after winger Wes McDonald - the 22-year-old penning a new deal 18-month with the club - is working hard behind the scenes as he looks to add both width and firepower to his squad.
The Mansfield-born manager oversaw a major squad overhaul after taking over from Dean Keates last summer, but admitted is squad is still a little short in key areas, before insisting he will not sign players just for the sake of it.
Despite having the likes of Josh Gordon, Caolan Lavery, Elijah Adebayo, Rory Gaffney, and the recently recalled Mitchel Candlin all battling for a starting spot the manager also admitted he could be tempted to sign another centre forward.
Speaking via the Express & Star, Darrell admitted he would be very disappointed if he failed to secure any new arrivals, he said; "I’d be very disappointed. I’m after wide players.
"We have Wes who we signed, I’m really happy with that. But I need a couple of left-footed or right-footed wide players. That’s what I need to strengthen, they’re the key areas for me where we’re short on. If the right centre forward became available then I might be tempted as well.
"But the key focus for me is on the wide areas. You very rarely get your first, second or third targets if I’m honest with you. As a lower league manager, I’m sure other managers up and down the country will be saying exactly the same thing.
"There’s a lot of working going off in the background to make sure that the players that we bring in this window are the right fit. You miss out on quite a few for different reasons.
"To get players in is pretty easy, no disrespect. But it has to be the right players all the time. You have to get sixty or sixty-five per cent of your recruitment right if you want to be successful.
"We haven’t got a big recruitment team at the football club, it’s me and my coaching staff that do that. We’ve had plenty of eyes and ears out there, and speaking to other managers. Our scouts, one or two that go out to get the right mould of player that I want to bring in."