Brendan Rodgers feels Raheem Sterling "thoroughly deserved" his call-up for the England squad to face Sweden on Wednesday.
Sterling, 17, has only started nine league games in his brief club career but could make his England debut in Stockholm.
The Jamaican-born winger was an unused substitute for the Three Lions' 1-1 draw with Ukraine on September 14 after being picked for the senior squad before he had made his debut for the Under-21s, and now Roy Hodgson has selected him for a second time.
Sterling has become an automatic choice for Rodgers this season - even though he had not begun a first-team game until August.
And the Liverpool manager said: "It's a great effort by him. He has been fantastic this season since he has broken in to the team so he thoroughly deserves his call-up even though he is so young. I am delighted for him and for all the hard work he has put in."
Rodgers laughed off a suggestion that Sterling, who was rested for Thursday's Europa League defeat to Anzhi Makhachkala, could benefit more from a week off than a trip to Sweden.
"He's 17 years of age and he will have plenty of time off later in his career," the Northern Irish boss said. "He has got a good head on his young shoulders and I know he is looking forward to it."
Sterling has become more important to Liverpool with Fabio Borini injured and Rodgers unable to sign a striker on August's transfer deadline day.
But the former Swansea manager believes additions will arrive in January, saying: "I am confident we will be able to reinforce the group. We know we need to give the group some help and I am sure we will do that. The quicker we can do that the better and that will certainly be the aim."
However, he said no deals are in the pipeline yet.