Also, just musing, knowing what we know about this FO i tend to think when they go for their guy at the deadline this year it's going to be akin to when they went for Robbie Ray, or a guy with term and money.
I dont know that they have the farm to go for a Peralta, Alcantara, or Cabrera if they move, when you consider the Cubs and Dodgers are probably in on those guys.
I do wonder about a guy like Zac Gallen, who has been objectively terrible this season, but if you think you can tweak him, he could be cheap, or if the A's want to recoup value on Luis Severino, the Pirates Mitch Keller or the Royals Seth Lugo ( he should cost as much as the big guys though).
Barring that you have the firm B tier rentals in Kelly, Heaney, and Buehler.
I also think they still need a bat. They were linked to Alonso, and for me nothing has really changed. At minimum Davis Schneider and Myles Straw as top RHH off the bench isnt serious, and it sounds like Santander could be out kinda long term.