The double World champion visited Thomas Tuchel’s group as they build up towards upcoming pre-World Cup friendlies with Uruguay and Japan.
Littler had dinner with the players before hosting the ‘Three Lions Darts Championship’ at their Burton training base.
Despite Phil Foden hitting a 180 in the final, Ramsdale became camp champion to leave Littler impressed.
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The 19-year-old, who travels to Berlin this week for the latest round of Premier League action, said: “It was a dream as a football fan to come here to see the facilities, meet all the players and sit down and have dinner and have a laugh with them.
“We played a bit of darts – as they were warming up, Thomas Tuchel told me to teach these boys a lesson! There’s some good potential there in Phil Foden and Aaron Ramsdale.
“James Trafford had a little bit as well. The others not so much! I wished the boys luck this summer – let’s hope they can bring it home.”
Littler was presented with a signed shirt, with Jude Bellingham also giving him a signed jersey with the message “Keep smashing it” on the back.