The fight will take place in Las Vegas at WSOF 3 -- a venue has yet to be confirmed.
Fitch and Burkman will be meeting for the second time. The two competed at a UFC event in April 2006. Fitch submitted Burkman with a rear-naked choke in the second round.
After registering a first-round technical knockout of Aaron Simpson at WSOF 2 on Saturday night, Burkman expressed his desire for a 170-pound title fight. WSOF officials hinted that Burkman would likely face Fitch next.
But Burkman frowned at the suggestion, stating that Fitch was not yet worthy of a WSOF title shot.
"I'm going to talk to them about it," Burkman said after improving to 25-9. "I think I deserve a title shot. I've beat [Gerald] Harris; I've beat [Aaron] Simpson. Those are two of the best outside of UFC.
"I think I've earned my title shot. I think Jon Fitch needs to earn his title shot and then we can fight for the title."
WSOF does not yet have a 170-pound titleholder, and the promotion has yet not stated its plan to fill that void.
Fitch signed a multifight deal with WSOF on March 7. The signing came less than a month after Fitch (24-5-1 with one no-contest) was released by UFC.
Despite going 1-2-1 in his four most recent fights, Fitch remains among the highest-ranking welterweights in mixed martial arts. He is currently ranked ninth by ESPN.com.