Sublease...has a contract been established?

[Bryan H.]

My tenant in Washington DC ask to sublease and I told the tenant that they could sublease. Their sublease candidate submitted their credit application for approval and I approved .  A couple of days went by and the tenant sent me information for another sublease candidate. At this point, I told them I am not considering any subleases.

I would like to know if I am legally obligated in any way to my tenant or the first sublease candidate. The sublease candidate's application fee has been returned, but not at their request.

Please advise.