Thinking more about what may be going on...
We know, from published information, that Logan Dawson is currently at BC, working out with the Eagles. He hasn't registered for classes yet (too early), but he likes the coach, a lot, and he's no doubt bonded with at least some of the other players.
On the other hand, he's a life-long Phillies fan, drafted by the team he loves, and they're offering him a large chuck of money to sign a contract.
I suspect he's undecided, torn between two very attractive options. I have no doubt his advisors let the Phillies know he wouldn't need more money than they have available for him - something like $500k. So it's not about the money; it's about making a decision - and giving up something really desirable either way. And Dawson's reps may well have told the Phillies something like that - he doesn't need more money, he just needs to choose, and he's struggling with that.
I suspect the Phils have an agreement with Brian Walters - that he's agreed to sign for something like $50k - but that the Phillies have told him to sit tight, and if Dawson ultimately opts for BC, then they'll increase the bonus they'll give Walters (probably to $150k). But they can't finalize that until Dawson commits, one way or the other.
They've probably given Dawson a "must decide" deadline (late this week?), but aren't pressuring him to choose sooner than that. It's a lot to put on an 18-year-old.
All just speculation, but it feels like it fits.