Long is Cup-tied from the game after moving from West Bromwich Albion late in January.
He told the Hull Daily Mail: "I am cup-tied, so I won't be able to play, but I hope the lads do get there. It will probably be my luck that I will be cup-tied and they get to Wembley for an FA Cup final.
"But the lads deserve it. They have put in some great performances over the year and a cup run is always nice to have at the end of it."
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