Subto to househack P2

[Alexandra Belle]

Hi! I need some advice. 

Here's the situationDuplex in beautiful historic neighborhood. 

Active at $290k. 

Spoke to the agent - one unit is owner occupied the other is vacant - owner is moving out the country that's why she's selling. 

$14,700 left on mortgage. 

Asked agent is owner is open to creative financing he said yes.

I want to offer sub-to with no money down but I also want the agent to get paid his commission. I currently don't have the money for his commission or any misc. fees associated with closing. Has anyone ever used any resources to assist with commission or closing costs? Any grants, etc? Is it appropriate to ask the agent if I could also pay him monthly until his commission is paid off? 

I could really use some advice! Thanks