For anyone wondering...Perez has said he would like to stay.
Sounds like Katz would like him to stay too: "I think any team would like to have Martín. There's so many great qualities to him, just as a person and the ability of what he's able to do on the mound. So I would love to be able to say I could spend more time around him. Not my decision, but he's been awesome to have here. I think the younger players have really appreciated him. Not only that, but he's really great with our Latin players too. A lot of the young guys, he really kind of takes them under his wing, being able to talk to them, communicate with them a little bit more, it's great to see. So he takes a lot of pride in that."
It's a mutual option for $10 million, or I guess they could negotiate something else.