How to fund a down pymt ?

[Steve S.]

I own 3 rentals and have found a multiproperty deal for about $1M. 

My lender will accept 20% down. 

I have the $200,000 but it would require selling some stock which I'd rather not do. 

I would like to bring $100k with the other $100k coming from somewhere else I'd pay back. 

I could pay back the $100k in < 1 year  

Are there any options, creative or other to get me to the $200k down payment without tapping my taxable stock portfolio?