A fellow searcher has brought me a very nice business which he has under LOI and can't commit to for legitimate reasons.

I am a single sponsored searcher and have no major acquisition funding commitments and I have room for flexibility in structuring my fellow searcher's compensation.

What are the typical forms of compensation for bringing someone a business? What are the positives/negatives to giving equity vs a fee? What ballpark should I be expecting to offer as compensation?