While the inclusion of some players hints at positive news on the injury front, the absence of captain George Honeyman has proven to be a surprise among supporters. But who are the players on the plane? Scroll down and click through the pages to see who Ross has decided to name in his travelling party:
5. Duncan Watmore
Yet to miss a session in pre-season, Watmore looked lively in the Black Cats' first outing at South Shields. Photo: Frank Reid
6. Dylan McGeouch
With a move to Aberdeen off the cards for now, McGeouch will look to stake his claim for a starting berth at Sunderland. Photo: Frank Reid
7. Chris Maguire
The fan favourite shone towards the end of last season - and will be looking to dazzle Jack Ross in the Portuguese sun. Photo: FRANK REID 2019
8. Luke O'Nien
On the right flank or in the centre of the park? We may know more about where Jack Ross sees O'Nien in the long-run after the Portugal trip. Photo: Frank Reid