Complex sentence: It was announced on October 31 that Žaromskis had signed a multi fight contract with North American promotion Strikeforce and would still be under contract for DREAM as well due to the organizations' alliance.
Split into simpler sentences: It was announced on October 31 that Žaromskis had signed a multi fight contract with North American promotion Strikeforce. He will still fight for DREAM as well due to the organizations' alliance.