Four new clips from this week's Grey's Anatomy, "Start Me Up," hint at major developments to come ... and a lot of animosity remaining between a formerly iron-clad couple.

Arizona just won't take no for an answer, buying out the people subletting her lease and thus subletting her way back into Callie's life. The only problem? Callie is not pleased.

Not sure the positive spin Arizona tries to put on it flies, either ...

Follow the jump for three more sneak previews, including a scene with Teddy and Henry and the unveiling of the new interns being presented to our favorite residents ...

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