After giant magical throw-down (author's choice if they want to write it or not) Injured!Harry has just enough magic/lucidity to cast a spell to take him somewhere where he will be safe and able to recover.

His magic? Drops him at Marcone's feet.

Don't care if it's in the middle of a meeting with the Mayor, or while Marcone is having dinner, or even while he's in bed.

Make it happen Anon!