They have reportedly worked closely with supporter group Wor Flags in an effort to stir the atmosphere ahead of the game.
Sela - a Saudi company - have another surprise planned at Wembley ahead of the game but will reveal that closer to kick off.
And while the fans and sponsors are getting their affairs in order, Newcastle boss Eddie Howe has some thinking to do when it comes to his side ahead of the game, particularly in goal.
“We need the whole squad focused on Sunday now and everyone has to be ready to perform.”
Away from the Carabao Cup, Newcastle also have another route through to a European spot this season courtesy of their Premier League position.
Howe’s side sit sixth and just two points behind fourth-placed Chelsea, with their next league game pitting them against Brentford at St James’ Park after the March international break.
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