The young midfielder is in the England Under-20 squad for the first time for two friendlies against the Czech Republic at St George's Park tomorrow (Saturday, September 5) and at Shrewsbury's Greenhous Meadow on Monday.
Harry, 19, signed a new deal in July and has been part of Mauricio's Pochettino's squad all season without making it onto the bench in our four Premier League matches so far.
He hopes that will change with the Capital One Cup and Europa League now on the horizon - and knows good performances for the Three Lions will only help his cause.
"I've been with the first team squad this season and of course, I'm hoping to get an opportunity," said Harry, who made his senior debut for us against Partizan in the Europa League last season.
"Obviously I have to do well in Under-21 games and internationals as well and when I get back I'll continue to work hard in training and try to get that opportunity. There are a lot of games coming up so hopefully it will work out.
"In the meantime, it's always an honour to be called into the national squad and the Under-20s is another big step for me. I really enjoy playing for my country and these games against the Czech Republic will be a big test."
Meanwhile, Harry gave an honest assessment of our Under-21s 4-1 International Cup defeat against Everton on Monday, where three goals in five minutes either side of half-time left us 4-0 down and ultimately out of the game.
"You want to win every match whether it's league or cup and to lose 4-1, especially in a stadium like Goodison Park, hurts everyone," he added.
"We shouldn't have lost 4-1 with the team we had out. It was a bad day for all of us. We were slow all over the pitch, didn't create enough, didn't take the chances when we did create them and weren't solid enough throughout the team. It was all basics and we'll look to put it right."