However, they are still a part of manager Gareth Southgate's England squad for the upcoming World Cup Qualifiers.
Ferdinand, who captained England at one stage of his career, believes in form players such as Michael Keane and Ben Godfrey should have been selected instead.
"I was a bit baffled with the selection of defenders," Ferdinand told BT Sport ahead of Everton's FA Cup clash with Man City on Saturday.
"You look at Dier, he's not a regular at his team, you think how has he actually snuck in there? Coady hasn't had the best of seasons.
"Godfrey has come in, hit the ground running, and he's been immense, played in multiple positions at the back. A young player, you think going to a tournament to get experience - I did that, the experience I got was phenomenal.
"Not only him - Michael Keane has been one of the most outstanding centre halves in the league this year."