Scotland, Wales and Northern Ireland have named their first squads of the 2020/21 season with the home nations preparing for differing challenges over the months ahead.
While Nations League matches take centre stage in September, Scotland and Northern Ireland have delayed Euro 2020 play-offs the following month.
Scottish boss Steve Clarke has called up new QPR forward Lyndon Dykes, the 24-year-old Australia-born player having recently moved from Livingston, for games against Israel and the Czech Republic.
New Northern Ireland manager Ian Baraclough has games against Romania and Norway to start his reign, Michael O'Neill having moved back into club management, and captain Steven Davis looks set to join draw level with Pat Jennings on 119 caps for his country.
For Wales, with a Euro 2020 berth already secured, focus is on preparing for next summer's tournament.
Ryan Giggs, whose side take on England in a Wembley friendly in October, has called up Liverpool youngster Neco Williams, the defender still eligible to play for England until he makes a competitive Welsh appearance.
"He's come through the system and he's proud to play for Wales, said Giggs.