First meeting with new youngster didn't go well

The new baby has a bite mark that I finally got to stop bleeding. Now Myc is bullying his cage mate and being a jerk. I've never seen him bully Greg before or go after another animal, though he has always asserted dominance, and been the big boy in the cage. I assume his new attitude is because of the new comer, but it still worries me. The new baby won't be sleeping with the big boys tonight, I'm just wondering if there are any tricks I could use to get them to accept each other quicker. Greg is already indifferent to him, but I'm really worried Myc will go after him again. I wasn't worried at the rough and tumble until the baby started to bleed :c