Now then. There's football matches, and then there are football matches*.
This one is officially huge. The only thing that's bigger is next week's second leg, and possibly the final, but we're getting ahead of ourselves.
I'll be looking after the build-up on the BBC Sport website during the day news.bbc.co.uk/sport1/hi/foo... , before putting you in the rough workman's hands of Caroline Cheese for the match itself.
Throw over as much chat as you like, and I'll feed the finest slices into the yawning maw of the live story.
* if Motty's never come out with that before, he can have it for free.