David Holdsworth's quest to secure urgent defensive reinforcements has suffered a setback after moves for two key targets broke down.
A lack of cash thwarted the Imps boss in a move for Exodus Geohagon, who has signed for Kidderminster, and in-demand centre-back John Dempster.
Holdsworth held extensive talks with the pair, but admitted defeat having been unable to match their wage demands.
After Ashley Westwood left the club last week to try and secure a coaching role at Portsmouth, Lincoln have just two centre-backs on the books.
Holdsworth said the situation is far from ideal, but vowed not to give up the fight.
"The timing of losing Ashley was not great because it's messed about with my preparations," he said.
"I've immediately tried to sort it by talking to Exodus and John, but we are not in a position where we could afford either player.
"I am not one for moaning about it, but they are the kind of centre-backs I am trying to bring to the club.
"They have experience which is what I am looking for but clearly that comes at a price.
"But I am not giving up. I have several meetings lined up with players and hopefully we can sign someone because we are very threadbare on cover."
Lincoln's hierarchy are attempting to aid Holdsworth by giving him ongoing cash advances matching the total received from the Name our Stadium campaign.
This week the club announced it had made £15,000 from the scheme which is raffling off the naming rights to Sincil Bank.
The figure is £10,000 short of the club's budgeted figure of £25,000 and £35,000 short of their dream total of £50,000.
The club are expected to launch a concerted effort to try and push sales of tickets with just two weeks remaining before the competition closes.
Chief executive Steve Prescott said a surge in sales would help Holdsworth’s recruitment drive.
“We are giving David advances, but obviously it is an ongoing process,” he said.
“The more money we receive from Name Our Stadium, the more he receives to help in building the squad.
“I think it just underlines how important these initiatives are.
“The fans have a real chance to play their part, a bit like they did many years ago by raising the money in signing Kevin Austin.
“Undoubtedly we have a solid response so far and we are confident that we can reach our budgeted figure of £25,000 in the last two weeks.
“We have had a lot of pledges and it’s about turning them into real cash.”
Meanwhile, the tribunal to determine how much Lincoln City will pay Gainsborough for defender Andrew Boyce is likely to happen at the end of August.
The two clubs have been unable to thrash out a fee for the defender and an independent panel will now calculate his worth.
Holdsworth, Boyce, Prescott and chairman Bob Dorrian will all be expected to attend.