Of course there will be a fusion monster here, otherwise Red-Eyes Fusion would be totally pointless. Unfortunately, RESD is unlikely, unless we also get Red-Eyes Gearfried. Knowing Konami, what's more likely to happen is us getting the vanilla Meteor Dragon or Summoned Skull and their fusion with Red-Eyes.
RESD requires warrior type monster, so Konami could just give any random warrior monster to fulfill that requirement. Like how we get Noble knights in Silent Swordsman SD.