Olympiacos coach Michel was at Old Trafford on Sunday to see Champions League opponents Manchester United lose to Liverpool.
The Athens-based side secured their 41st title with five games to spare after a 2-0 win over Panthrakikos.
"After the celebrations and the joy, we will be ready for United," he said. "The league title will make the trip more enjoyable. But we need to stay focused.
"If we think we have the upper hand in the tie, we will fail."
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