Delph is in the England squad for the friendly against Norway and the Euro 2016 qualifier with Switzerland next month.
"Whoever follows those two lads - I don't think you ever replace those two brilliant footballers," he said.
"No two players are the same, it's a new generation, a new time for England.
"You have got to have players coming through to hit those heights.
"Maybe England never won anything with them but they were top players. To fill that is a big ask for anyone.
"Comparisons are unfair because the two made over 200 appearances for England. It is a new generation, hopefully he will do well and stay in that squad.
"I hope he can handle it. If he goes in and feels overawed it will be hard for him. But he's earned the right to be there so everyone thinks good enough, now it is up to him to go and show what he can do.
"If you can't handle it in football it can hurt you mentally."
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