Arnie Pye has been placed in "The Vault." Look for him there. The contents change every week and the list of items offered in a given week varies from person to person. When he does show up in The Vault, he'll have a rebate attached to him.
For a complete list of what's offered in the vault look here:
https://forums.ea.com/en/the-simpsons-tapped-out/discussion/102247/the-vault-complete-list-thanks-to-tstoaddicts