Do they already know Each other? If they have known Each other for some time and lived together with no issues, I would say it is fine. But if they don't know Each other het, I would be very careful.
I have a blind lovebird, rescued when she was already blind so she didn't know me of my other lovebirds. She seemed very sweet, but now she is getting braver and a few weeks ago she ventured on the floor, where my lovie Fëanor was sitting by the closet which hé loves to hide behind. The blind lovie approached Fëanor, who was not sure what was happening because the blind lovie did not respond to his body language. She ended up attacking him, thankfully I was close by and Fëanor didn't really fight back, but still. I believe Xena(the blind lovie) didn't want To fight, but just didn't understand why she couldn't go past him. Fëanor in his turn was very insecure because hé told her to back off with huis body language but she did not respond at all. So a miscommunication, but it could have had big concequences.
A lot of the time they are alright together, but that is because they mostly ignore Each other and live peacefully that way.
Your case could be very different, but maybe my experience can help you a little bit
Thank you for rescueing him, I would love to hear more about him as time goes by!