Here are 10 high-profile players who have not yet managed to replicate their club form on the international stage, including Manchester United's Bruno Fernandes and Liverpool's generational talent Trent Alexander-Arnold.
Click through the gallery above to see 10 big names who have so far struggled for their countries.
Yet another international break has rolled around, and while it might be unwelcome to many aggrieved club bosses, it is perhaps a chance for a few players to establish themselves while representing their countries.
United's Fernandes might be joining up with his Portugal colleagues in excellent form following his performance for the Red Devils in their 3-1 away win over Everton in the Premier League, it has been a while since he scored for his nation.
The 26-year-old last found the back of the net for Portugal in November last year, and has contributed to an overall tally of just six strikes in 23 appearances. At club level, however, Fernandes has been involved in 31 goals in 33 matches for the Red Devils since joining the Manchester club in January.
Although he is injured and has subsequently withdrawn from the England camp, Liverpool's Alexander-Arnold has not found his feet in international football, at least not yet. The 22-year-old's role for the Reds as a marauding right-back is not quite the one he has for the Three Lions, although there is plenty time for that to change.
To date, the defender has played just 12 matches for his country over the past two years, despite winning the UEFA Champions League, the UEFA Super Cup, the FIFA Club World Cup and the Premier League during that same time frame.
With one goal in 23 appearances for France, Anthony Martial will be hoping to develop some consistency for Les Bleus, as will Juventus playmaker Paulo Dybala, who has found the back of the net just twice for Argentina in five years. You can see some more high-profile players who are not yet key players at international level in the gallery above!