They could do I suppose. But whenever the fixtures are published its always stated that they are "subject to change" - I'm just so used to checking now that its become second nature. Sky have had a hard-on for us for 3-4 years now, so we're always having our games mucked about. I've never yet...
If Chelsea are playing on a Thursday night (which is when the Europa has been played for a few years now), then I'll already know that we won't be playing them on a Saturday - don't need to see a fixture list to realise that. And surely we're long enough in the tooth by now to know that any game...