The 22-year-old was a key figure as Sheffield United won promotion to the Premier League, earning the Golden Glove award for the most clean sheets in the division. It was another superb loan spell for the Academy graduate, who was with Shrewsbury Town alongside Reds new boy Daniel James in 2017.
He has been handed the no.1 jersey by coach Aidy Boothroyd for the tournament, which takes place in Italy and San Marino, ahead of fellow stoppers Angus Gunn of Southampton and Newcastle United's Freddie Woodman.
Henderson, who lifted the Under-20 World Cup with his country in 2017, cannot wait for the finals to start, with the opening game taking place on Sunday when Poland face Belgium.