England are set to play Japan on 22 June and in New Zealand on 6 and 13 July.
The Tests will be the first since the Six Nations, in which England finished third.
Full England squad
Forwards: Fin Baxter (Harlequins), Chandler Cunningham-South (Harlequins), Alex Dombrandt (Harlequins), Greg Fisilau (Exeter Chiefs), Joe Heyes (Leicester Tigers), George Martin (Leicester Tigers), Gabriel Oghre (Bristol Bears), Guy Pepper (Newcastle Falcons), Ethan Roots (Exeter Chiefs), Rusi Tuima (Exeter Chiefs)
Backs: Charlie Atkinson (Gloucester Rugby), Immanuel Feyi-Waboso (Exeter Chiefs), Max Malins (Bristol Bears), Luke Northmore (Harlequins), Harry Randall (Bristol Bears), Henry Slade (Exeter Chiefs), Marcus Smith (Harlequins), Freddie Steward (Leicester Tigers), Jack van Poortvliet (Leicester Tigers)