Sunderland's ranks will be boosted at their Austrian training camp tomorrow, with Lamine Kone, Wahbi Khazri and Patrick van Aanholt all due to report for pre-season.
Sam Allardyce's first-team squad has not been at full strength in the Alps after a number of players were given extra time off due to their international commitments at the end of the domestic season.
That has seen a number of academy youngsters - George Honeyman, Rees Greenwood, Tommy Robson, Josh Robson, Ethan Robson, Max Stryjek and Lynden Gooch - travel to Austria and get a chance to catch Allardyce's eye.
But January signings Kone and Khazri, along with left-back van Aanholt, are all due to join their team-mates on the Continent this week.
Kone and Khazri were given an extra week of holiday after their commitments for Ivory Coast and Tunisia respectively at the end of the season, as was van Aanholt, who featured for Holland last month.
Euro 2016 pair John O'Shea and Seb Larsson will both have an extra breather, as will Emanuele Giaccherini, although the Italian's return to Sunderland could be curtailed if he can seal a permanent move to Serie A.