The centre-back is nursing a foot injury and was not ready to face his former club Manchester United in midweek, but Brendan Rodgers is hopeful of having him back for the showpiece event.
Castagne could therefore displace Luke Thomas - whose first Premier League goal on Tuesday was one to remember - while Ricardo Pereira should be fit enough to demote Marc Albrighton down the bench on the opposite flank.
Kelechi Iheanacho bagged the winner against Southampton in the semi-finals and will continue up top alongside Jamie Vardy, who by contrast is still waiting for his first goal in this season's tournament.
Leicester possible starting lineup: Schmeichel; Evans, Fofana, Soyuncu; Pereira, Ndidi, Tielemans, Castagne; Maddison; Vardy, Iheanacho
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