I'm guessing Bam's promoter was able to convince Martinez of a good deal after the Ioka rematch fell through. Truth be told I don't think there was really any point of a rematch with Ioka given how one sided the fight was and I think Martinez only pursued a second fight because it pays well in Japan.
I don't know what to trust anymore but now there is another rumor saying that Puma vs Ioka rematch is almost finalized for April 22nd in Japan.
I think I get why Turki announced this before the Cafu fight -- motivation for Bam. If Turki is serious about only wanting guys who make exciting fights, I mean, Bam is one of them (no shrinking ring gimmick needed if Bam is in there). If Bam goes out there and wrecks Cafu, it'll build the fight with Puma up more. With one Saudi fight signed and more on the horizon if Bam impresses Turki, Bam's probably focused as hell.