Also, David Mitchell and Simeon Thoresen have agreed to meet. The main event features UFC flyweight champion Demetrious Johnson going up against John Dodson.
Bader (14-3) was defeated by Lyoto Machida earlier this year. The former Ultimate Fighter winner is 7-3 in his UFC career.
Matyushenko (26-6) has posted a 7-4 record inside the Octagon, but is also coming off a loss, having been defeated by Alexander Gustafsson last year. "The Janitor" was forced out of a planned encounter with Matt Hamill earlier this year due to an injury.
Mitchell (11-2) has dropped both of his UFC bouts, while Thoresen (17-3-1) is 1-1 in his two UFC fights.
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