Sunderland will take part in the Peace Cup in South Korea this summer.
The Black Cats confirmed they have accepted an invitation to join K-League side Seongnam and Bundesliga outfit Hamburg in the competition.
Chief executive Margaret Byrne said: "Sunderland is immensely proud to be invited to participate in the Peace Cup.
"This tournament has a proud history involving many of the world's top clubs, and for Sunderland to be considered amongst them is a huge honour for us.
"The arrival of Ji Dong-won at Sunderland has seen a truly warm partnership begin to grow between our football club and the Korean people.
"They, like us, share a genuine passion for football and we are delighted to be sharing the Sunderland vision with them."A delegation from the club, which signed striker Ji Dong-won from Chunnam Dragons during the summer, visited the country last year as part of its attempts to exploit the global market.