Dear friend,
What exactly is the issue? Is the problem from your side or from the candidate's side? You could have given little more information?
While raising a post on the public forum, and that too while seeking advice from the seniors, a member is expected to give complete information like when the offer letter was issued, for what designation, what was the date of joining, why the selected candidate sought an extension to join, why did he do that, how many times he backtracked from the commitment, what of correspondence you had with the candidate and so on.
Sans this information, how will it be possible to provide a draft of the letter?
Secondly, about the preparation of the draft itself. You could have prepared draft and uploaded it here. Some senior could have corrected it. Yes, there are few HR Managers who show overzealousness in providing the drafts even with inadequate information, but then this kind of spoon-feeding does a great disservice not just to the individual who seeks the draft but to the HR community as a whole.
Thanks,
Dinesh Divekar