In that case sponsorship is not possible at this time because he is inadmissible to Canada. It wil be a number of years before it will be possible for him to apply to come to Canada.
You will have to wait another four years - until five years have passed since he was released from jail. Once this time passes, he will have to apply for rehabilitation and wait for the rehabilitation application to be approved. Processing can take anywhere from a few months to over a year. Once rehabilitation is approved, you will then be able to sponsor him.