Gomez has impressed mightily in four Premier League starts at centre-back and Cascarino is confident he could fill the role better than Walker.
"Joe Gomez played really well on the right of England's three-man defence," the former Chelsea striker told The Times. That position is his to lose now. He is 21 and will only get better playing centrally alongside Virgil van Dijk for Liverpool this season.
"Kyle Walker did well in that role in the World Cup but Gomez is almost as quick and is better in the air and has better positional sense than Walker, who is best at right back. The Manchester City man's strengths are in one-on-one situations and flying up and down the right flank.