Aitor Karanka's squad will head for Barnsley on Wednesday July 29 (7pm) - four days after taking on neighbouring Doncaster Rovers at the Keepmoat Stadium.
Oakwell is a familiar venue for Boro fans, and our last visit was in January when goals from Jelle Vossen and Dani Ayala proved enough to secure a 2-0 FA Cup third round victory in a game that also saw Adam Clayton red-carded.
We still have more dates to confirm, including a potential home game on Saturday August 1.
Sat July 11 York City (A) 12 noon
Sat July 25 Doncaster Rovers (A) 3pm
Wed July 29 Barnsley (A) 7pm