Potential candidates: Nick Pope & Jordan Pickford.
Over the last 20 years, England has had only one quality goalkeeper: Joe Hart. He wasn't perfect, but in his prime, he was globally recognised as one of the best in his position. This all changed when Pep Guardiola came in and chucked him out on loan, pretty much ending his England career. Failed loan spells at West Ham and Burnley followed. He now sits on the Burnley bench watching Nick Pope fight for the illustrious England number one shirt.
If the Euros took place in 2020 as planned, the safest pair of hands would belong to Everton's Jordan Pickford. His penalty shootout heroics at the last World Cup would have been enough to keep him in the squad but a shaky season has put doubt in the minds of even the strongest Pickford supporters.
Henderson has proven himself one of the best keepers in the league this season. Sheffield United's main man is a great prospect and with another season of Premier League football along with some international starts it should give him the experience needed to make the number one shirt his own.