Feijao vs. OSP has been discussed by all parties involved, however, Strikeforce officials recently told MMA Fighting that "nothing (is) finalized" just yet.
Cavalcante (10-3) lost his title to Dan Henderson in March via third-round TKO. He won the title last August when he defeated Muhammed Lawal via third-round TKO.
St-Preux (10-4) went 7-0 in 2010. He most recently scored a unanimous decision win over Abongo Humphrey in January.
Recent reports stated that St-Preux would be facing Lawal at Strikeforce's June 18 event, but according to sources close to both fighters, that fighter was never close to being signed.
MMARising.com recently reported that Lawal would instead be facing Roger Gracie on a July 9 card, which could be the same one to feature Feijao vs. OSP.