Clarke's team have scored just once in their last six outings and, after failing to build upon their season-opening win over Northampton Town, have slipped to 21st in the League Two table.
The gaffer is beginning to see a few of his previously injured players return to the fold and, with the likes of midfielder Danny Guthrie and winger Rory Holden both having spent time on the treatment table, the number boost can't come soon enough.
Speaking via the Express & Star, Clarke who recently added Salford City striker Rory Gaffney to his squad, believes the team will be better when those players are up to full speed.
The Mansfield-born boss said; "Danny is on his way back, he is one of our more creative players. He has played 60 minutes against Coventry and he got another 60 at Colchester.
"But we had to take him off in both games because of his lack of minutes following his hamstring injury. He will be getting fitter all the while. Rory Gaffney has just come in as well.
"Rory Holden has just come back from injury. We’ve got a few boys who have done well to get through three games last week.
"The old chestnut, though, is that we have got to work on our forward play. We need to believe in ourselves a bit more and be a bit braver on the ball."