The right-back looks likely to make his first competitive start for the Three Lions in the World Cup qualifier against San Marino on Friday.
The 22-year-old has already made three appearances for his country in friendly matches, but he admits that a competitive start for England is a dream come true.
"On a personal note it is a fantastic opportunity for me to get into the team. I've been patient and waited for that. Hopefully on Friday I can show everyone what I can do and have a good game," said Walker.
"A first competitive start is what I've been waiting for, for a long time now. For all my career, since I was seven, I've wanted to play for England, and put that jersey on. At the end of the season it was a disappointment, having worked so hard to get into the England team, to have that little niggle on my toe.
"But it was fantastic the manager gave me the phone call, saying it was sad he couldn't take me there but saying I was in his plans and he had belief in me. I had a good last season, winning the PFA's Young Player of the Year award and a few more awards, but that's just the start and hopefully I can go on."
Walker missed out on Euro 2012 with a toe injury.