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Further to your question, I am an Immigration solicitor and will be assisting you with your question today
Kindly note that unfortunately you cannot apply for him as due to Brexit you have to me married before the deadline of 30th Dec 2020.
Further to our conversation as discussed you will either need to enter into marriage and thereafter apply for a spouse visa. Alternatively if he can find a job whether the employer is willing to sponsor him he can apply for a Skilled Worker Visa however he will need to travel back and apply from there.
You can apply as soon as you enter into marriage and you do not need to show the 2 years.
You can report them to the following link
All the best