The 29-year-old made two notable errors during his country's European Championships campaign recently as his side were eventually knocked out at the quarter-final stage.
"Hart is two levels below Neuer, Courtois and Lloris. It's heavy. I don't understand the English culture around the position," he added.
"They need huge guys, but they're just walls that don't come out. Clubs and the FA need to change their philosophy in developing goalkeepers."