The 36-year-old actor will reprise his character of Magizoologist Newt Scamander in the David Yates-directed film, titled "Fantastic Beasts: The Crimes of Grindelwald".
Law was last year cast as Dumbledore in the film, which will also see Johnny Depp reprising his character of Gellert Grindelwald, reported Femalefirst.
"I've known Jude for many years and I like him hugely and it was really wonderful watching him find the young version of Dumbledore," Redmayne said.
"Fantastic Beasts: The Crimes of Grindelwald" will also feature Katherine Waterston, Dan Fogler, Alison Sudol, Ezra Miller, Zoe Kravitz, Callum Turner and Claudia Kim.
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