If you want Call Of Duty: Ghosts on not one but two consoles, Amazon are offering an impressive saving courtesy to their digital Xbox 360 and Xbox One combo pack. You'll get a download code for both the Xbox 360 and Xbox One versions, allowing you to retain your multiplayer progression due to the server-side profile. If you want to get into Ghosts on the Xbox One but still have plenty of friends who haven't bought into next-gen yet, this could well be the way to go.
I'd strongly recommend prioritising it on Xbox One to enjoy the somewhat superior visuals and Ground War player count. Or, honestly, playing something else. Thanks to iwelford @ HUKD!