What to do with an In-Ground Pool

[Matthew Rembish]

So my agent approached me with a potential rehab flip that he put under contract at an auction. Due to the situation, the timeframe for a decision is tight and wants to know whether I want to move forward with it by the end of the week. I walked the property about an hour ago and everything looked great except for there being a covered in-ground pool within the backyard; the cover was tight but I was able to stick my head in a small gap and found that it was completely drained. My agent is very good at what he does and works with many other investors in my town but was unable to give me any further information as to whether it's working or if it's completely out of commission. What do I do? Does anyone have any experience with these kinds of situations? What's the worst and best case scenarios and how much would each one cost? I would imagine the worst would involve having to fill it in but how much would that cost?

Not sure if this will be of any help but here is an aerial of the property (the pool is pictured in the bottom left):

Thoughts?