While mentioned in passing throughout later seasons, Burke officially returns in the tenth season in order to conclude Cristina Yang's departure from the series.\n\nAnswer this question based on the passage: what season does burke come back in grey's anatomy?
A step-by-step solution is:
the tenth season
The relevant information is: While mentioned in passing throughout later seasons, Burke officially returns in the tenth season in order to conclude Cristina Yang's departure from the series.

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The answer: the tenth season