Burton Albion will play Benfica as part of their pre-season preparations for their first ever season in League One.
The League Two champions will host the reigning Portuguese champions at the Pirelli Stadium on Tuesday, 21 July.
Chairman Ben Robinson said: "What better curtain raiser than a prestige friendly against one of the best-known clubs in Europe."
Burton also have friendlies against non-league teams Gresley and Mickleover Sports and Premier League Leicester.
And the Brewers will host Birmingham, who are managed by former Burton boss Gary Rowett, as well as fellow Championship side Wolves.