was er sehen will

what he wants to see

→ was
phrase Rare #44,075
what he wants to see Here, „will“ means “wants to,” not “will” as a future auxiliary.
GE: Jeder sieht, was er sehen will.
EN: Everyone sees what he wants to see.

Jeder Mensch sieht das, was er sehen will.

Everyone sees what he wants to see.

Jeder sieht nur, was er sehen will.

Everyone only sees what they want to see.

— Who Am I – Kein System ist sicher (2014)

Jeder sieht, was er sehen will.

Everyone sees what they want to see.

Jeder sieht nur das, was er sehen will.

Everyone only sees what they want to see.

— Who Am I – Kein System ist sicher (2014)