Lacan went beyond the proposition that the unconscious is a structure that lies beneath the conscious world; the unconscious itself is structured, like a language. This alone would suggest parallels with Jung, and Lacan is said to have tried to meet him.
Samuels articulates Lacan’s foundational claim—the unconscious is structured like a language—as the primary basis for cross-theoretical comparison with Jung, sketching Lacan’s three orders and aligning them with Jungian categories.
, Jung and the Post-Jungians, 1985thesis