Jeremy Renner shared a comic book related to the "West Coast Avengers" and Hawkeye on social media, which also featured his signature. Some fans speculated that this might hint at the "West Coast Avengers" entering the Marvel Cinematic Universe. However, Marvel Studios has not yet confirmed any development of related projects.
This speculation is tied to the backstory of the Hawkeye character. The mentor-mentee relationship between Clint Barton and Kate Bishop was depicted in the Disney+ series, and both characters have connections to different versions of the "West Coast Avengers" in the comics. This comic book team, based in California, serves as another branch of the Avengers.
Renner may simply be showcasing a comic book he signed at an event. A single social media post is insufficient proof that a film or TV project has been greenlit; whether Renner will participate in related works in the future remains purely speculative.