wow remember when this was going to be made back in the 90s with Willem Dafoe!

only took them about 25years to get this damn Ryan spin off made lol..

I guess it won't be connected to the Pine Ryan or Office dude Ryan

Looking at the trivia it goes into the history (doesn't look like Dafoe was going to reprise the role):
The film adaptation of Tom Clancy's 1993 novel 'Without Remorse' had been in development since the 1990s. In 1994, Keanu Reeves was offered $7 million for the role of John Clark but turned it down. In 1995, pre-production was well under way when Savoy Pictures shut down the project, which was set to star Laurence Fishburne and Gary Sinise. In 2012, Christopher McQuarrie signed on with Paramount Pictures to direct the film, with Tom Hardy in talks to play John Clark and Kevin Costner in talks to play his mentor, William Harper. In September 2018, it was announced that Michael B. Jordan would be playing John Clark in a two-part film series, which will be composed of 'Without Remorse' and 'Rainbow Six'. Director Stefano Sollima was announced in December 2018 and filming began in Berlin in October 2019.