Yes, there are likely some out there. The Star Wars fandom is vast, and many fans like to explore the idea of Dooku's redemption in their own stories. You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own.
Since there's no official story out there, we can only guess. It might center around Dooku's secret missions during his time as a Sith. Maybe it would show how he was manipulating events behind the scenes in the Star Wars galaxy. It could also delve into his unique fighting style and how he developed his skills in the Force, both as a Jedi and later as a Sith.
Well, it would make sense for some of Dooku's fellow Jedi from his early days to be in the story. Maybe Eeth Koth or Plo Koon. They could provide a contrast to Dooku's path. And on the Sith side, Savage Opress could be included. He had some interactions with Dooku. Also, Anakin Skywalker might make an appearance, as Dooku played a role in Anakin's journey, especially during their duels.
Star Wars: The Clone Wars isn't just Yoda's story. It showcases a diverse range of characters and their experiences during the Clone Wars era. Yoda plays a significant role, but the focus is more on the overall conflict and various heroes and villains.
Often in Star Wars novels, there are antagonists. In the Yoda novel, it could be Sith or dark side users. They would be the main opponents of Yoda and his allies. Their presence would create conflict and drive the story forward. Yoda's interactions with them would show his strength and wisdom in combatting the dark side.
One interesting plot idea could be exploring Dooku's early days in the Sith. Maybe showing how he was gradually corrupted by Sidious. Another could be a story where Dooku has a change of heart briefly and tries to make amends in some small way during the Clone Wars, but is quickly pulled back into the dark side by Sidious' influence. A third idea could be a fanfic that focuses on Dooku's relationship with his former Jedi colleagues during the Clone Wars, like how he feels when facing them in battle.
One way is through flashbacks. Maybe Kanan or Hera have heard stories from older Jedi about Yoda. These stories could then be shown in flashbacks and influence their actions in the present. Also, Yoda's teachings could be passed down through Jedi texts that the Rebels find. This would be a more indirect but still realistic way of incorporating him into the story. And his connection to the Force could be felt by Force - sensitive Rebels in times of great need, guiding them without actually appearing physically.
Obviously, Dooku himself is a crucial character. He is the central figure around which the story revolves. Count Dooku is a complex character who transitions from a Jedi to a Sith. Another important character is Yoda. His relationship with Dooku, as his former master, adds depth to the story.
One of the main themes is the fall from grace. Dooku starts as a respected Jedi but gradually turns to the dark side. Another theme could be the exploration of power and how it corrupts, as we see Dooku's pursuit of greater power lead him astray.
Count Dooku's story in Star Wars is quite complex. As a former Jedi, he was highly trained in the ways of the Force. His fall to the dark side was not sudden. There were underlying issues within the Jedi Order that contributed to his turn. Once he became a Sith, he was very influential in the Separatist Alliance. He was able to manipulate many systems to side with the Separatists. He had a unique style of lightsaber combat, which was a combination of his Jedi training and Sith teachings. His relationship with Darth Sidious was one of master and apprentice, though he was often used as a pawn in Sidious' grand plan. Eventually, his actions led him to face off against Anakin Skywalker, and his defeat was a significant moment in the overall Star Wars saga.