Crawley's players are worried they will not be paid during the summer break.
Up to ten players did not receive their April money on time, although all have now been reimbursed and were reassured at a meeting on Monday there would be no more problems.
Two months ago the whole squad had their wages temporarily cut in half when the club was plunged into a financial crisis.
They have also been promised their bonuses, which have remained unpaid since January 21.
But defender Dave Woozley, the Reds' union representative, says the players are "sceptical" about being paid during pre-season.
He said: "There was a problem with between eight and ten players regarding their wages.
"They were not paid on time but have now all got their money.
"I don't know why it was, it might have been something to do with the Bank Holiday and the banks being closed.
"We had meetings and were told the club will try to pay all the money owed over the summer.
"We are still owed personal bonuses, which date back to the Hereford game. They involve things like appearance money and amount to a substantial figure.
"The club want to start next season without any hangovers and with everyone fully paid up so we are ready to concentrate on the new season. That is the plan.
"The biggest issue for the players is that most are sceptical that we are going to get paid.
"The club will not generate gate money over the summer because there are not any games so the biggest worry is that we will not get money when we are on holiday.
"Of course, we all hope everything will be okay and we can progress as a club. That is what we all want."
Crawley's financial crisis began in February when a silent investor pulled out.
They have been threatened with a maximum £10,000 fine and three-point deduction by the Conference if they fail to resolve their problems.
Manager John Hollins said: "We could still be fined and have three points taken away, which is the maximum you can receive.
"We are trying to sort things out but it is a big job and takes time. It is going to be a long summer."
All contracted players can walk out for free with a 14-day notice because the club have breached their agreements.
But Woozley has ruled out an exodus, provided the wages are paid.
He said: "Any player is still entitled to hand in a 14-day notice because of what happened.
"But there are lots of players out there who are free agents now and are struggling to find clubs.
"Most of the players don't want to put themselves in that position voluntarily. We have contracts and as long as they are honoured, I would think most want to stay."
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