Visa troubles are preventing  Mario Sperry student Alexandre "Cacareco" Ferreira from making his Japanese debut at DREAM 4. Too bad, the dude sounds promising:

At 29 years old, Ferreira is a 10-year MMA veteran, but has finally lived up to his potential as of late. One of the world's best light heavyweight grapplers, Ferreira is riding a five-fight winning streak, including highlight reel submissions over Branden Lee Hinkle in 37 seconds via heelhook, Fabio Maldonado in 27 seconds via kneebar, and Lew Polley in 20 seconds via guillotine choke at an IFL event last February.

But it's still an impressive card, with the 2nd round of the middleweight tournament and the Shinya Aoki catch-up match for the lightweight tourny. Here's the full card per Nightmare of Battle :

OLYMPIA DREAM.4 Middleweight GP 2008 2nd Round
Date: June 15th, 2008
Place: Yokohama Arena in Yokohama, Japan

Middleweight GP 2nd Round Fights:
Kazushi Sakuraba vs. Melvin Manhoef
Yoon Dong Sik vs. Gegard Mousasi
Ronaldo Jacare vs. Jason Miller
Kin Taiei vs. Zelg Galesic

Lightweight GP 2nd Round Fight:
Shinya Aoki vs. Katsuhiko Nagata

Heavyweight Fight:
Alistair Overeem vs. Lee Tae Hyun

Light Heavyweight Fight:
Gadzhiev Alavutdin vs. TBA

Featherweight Fight:
Hideo Tokoro vs. Darren Uyenoyama