Complex sentence: Instead, Hergé was offered employment as a cartoonist for by its editor, the Rexist Victor Matthys; however, Hergé perceived as an explicitly political publication, and thus declined the position.
Split into simpler sentences: Instead, Hergé was offered employment as a cartoonist for by its editor, the Rexist Victor Matthys. However, Hergé perceived as an explicitly political publication, and thus declined the position.