Zlatan back in the Swedish national team.

At the age of 39 Zlatan has returned after 4 years away from the national team. There's no secret that the Swedish team isn't the best but should you let younger players grow instead of holding on to older players? Zlatan is a Swedish superstar but many people think that the national team did better without him since they could focus more on playing as a team rather than playing for Zlatan. Same thing have been said about for ex:Messi (Argentina) and Ronaldo (Portugal). How should a manager/team handle the fact that a superstar is in the team?