I say Yes, there's always room for more
Your male will be jealous for a couple of weeks, but after the settle in phase, will be attached to each other.
Be sure to introduce in a neutral area and not in your home.
I found that 2 males can fight, and 2 females can fight. But find my males always give into a female. However, being neutered early, you may not have that problem.
Adults usually growl down a puppy and usually takes longer to get used to a younger one. Puppies seem to chew at chin hair and get in their face, so they don't like puppies so much. But it will work when they adult finally teaches the puppy to give him his space.
Good luck!