The LOI will almost certainly end with a done deal if you remember this:
The company has been open about having two near-deals fall through in 2017. Based on how they discussed them after they fell through, the deals were close to being done, but some things out of RX's power held up the deal. They didn't PR either of these because they could tell there was a chance the deals would fall through!
Since then, they've gotten asked on conference calls (after quarterly statements have been issued) about M&A opportunities. They've reiterated over and over that they're being picky and won't pursue something unless it's the right fit based on cost, profit, financing, and overall potential.
The fact that they've gone through with the Letter of Intent to Purchase, based on history, means that this purchase will come to fruition. I honestly don't think there's any reason for concern that this deal won't get done.
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