I totally agree with you. Thomas Muller has done so much for German football and now it is time to give younger players chance. He has had amazing career winning many awards including the Golden Boot. He is legend in German football. He might keep playing club football but he will probably stay with Bayern Munich until his contract ends. He might consider playing outside Europe but it is unlikely he will join another European club. Muller time playing club football might be coming to an end but his legacy will live on. New talented players like you mentioned Jamal Musiala will carry on his legacy and inspire the next generation of German footballers.
Germany will missed out on one of the greatest player of all time, Thomas Muller. He's basically an important instrument for his club and country, although he's aged and no longer active in essential sectors, more comparable to pressing force. Thomas Muller have made public announcement, he has finally hang his boots when it comes to international games. He retire from international games and having full concentration on the big games at club level.
Thomas Muller have made great contributions to the German national team in his 129 appearances he played for the team and scored 45 goals so it's a very good achievement in his football career for his country and now that he has retired after the UEFA EURO competition, he will greatly be missed in the national team because throughout his international career he has been impactful in the German squad. He is 34 years and still have more playing time before his final retirement from football and he has been devoted to the Bayern Munich team both the Bayern division 2 and the Bayern junior team since the year 2000 till now which means that the German footballer's career has been within the circle of the Bayern clubs and since he joined the Bayern senior team in 2008 till date he has been very helpful. His retirement from international duty is his personal decision and I wish him well in the club's league side since all his focus will now be in the club matches.