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Thank you for your enquiry.
From reading your history, it is unlikely that your husband will meet the financial requirements because you do not have a job which you are returning to and there is little time left until his visa is due for renewal. All you can do is seek legal advice immediately you arrive into the UK. We don't accept instructions to represent clients on here.
If your husband overstays his visa, he will damage his immigration history and this will have an adverse effect in any future application he makes. If caught, he will be administratively removed. Please rate.