All it does is indicate that the buyer said he sent the money.
Once upon a time, ebay purchasers used payment methods besides paypal. Those were strange times.
in my experience, PayPal CANNOT actively take funds from your bank account. There's some legal issues there. They will just put your account in a negative balance and not allow you to fulfill any transactions whatsoever until the balance is taken care of.
I was in a situation where a dispute was risen and they put my account in a frozen state for $163. My bank account is linked, but not a penny ever left from there.
Still, to be sure, might be wise to de-link a bank account. PayPal isn't known for having good service.