Boro will kick-off pre-season in the UK with a trip to Mansfield Town on Saturday 19 July (3pm).
The Field Mill clash will be the first opportunity for Boro fans to see Rob Edwards' side in action this summer.
Boro have played the Stags in pre-season in recent years, and the last competitive visit was in 2022 when Chris Wilder's side won 3-2 in the FA Cup third round.
The game completes the summer programme of games for the new squad ahead of the new campaign.
Boro head to Portugal on Sunday for a week-long training camp that will culminate with a behind-closed-doors training game against local opposition.