Threat of Lien for Credit Card Debt

I have worked out minimum payments for a limited time or until I can pay my debts in full, with all of my creditors and collectors except one.

I owe this one collector (Capitol One through Total Credit Recovery) $6,800. They will not accept a minimum payment and said that if I don't pay them in full due now, that they will sue me and put a lien on my property.

I read the first chapter of your e book and realize I have told the collectors way too much personal information. I have told them that our property is now listed and that I will pay them when the property sells, which I do intend to do, but probably should not have said.

Today I have left a message asking the collector to send me his threat of a lien in writing. I am wondering if you think they will actually put a lien on my property for such a relatively small amount? And if you have any other advice for me regarding this?

Thank You,
Sincerely,
Leo