I suggest proceeding with caution.
I was able to re-integrate my polish white-crested bantam with two Rhode Island Reds after they had injured her picking at her head. It took several attempts and a lot of work for me, but in the end, it worked and I have a peaceful flock.
I used blu-kote to cover the bare spot, but it really didn't work for me until the feathers grew back in. They were attracted to the bare spot, maybe because they had developed a taste for blood.
The things I did that I think helped:
I kept the bantam in a tractor right against the chicken run for several weeks. A week before integration, I had the bantam spend time in the run with the others outside foraging (so she would get re-acquainted with the lay of the land.)
For me, part of the problem was the other chickens were attracted to the white crest feathers, so I sprayed them with blu kote, which gave her the lovely purple hairdo in my avatar pic. I got some Hot Pick spray (which is labelled for "exotic birds"). I started with supervised togetherness time, always spraying her crest first with the Hot Pick. (Tricky to do on a crest--you have to avoid the eyes.) They got a couple pecks in, but they didn't like it (plus I yelled and separated them, which scared them.) I gave them more and more togetherness time, eventually integrating and re-spraying with Hot Pick once a day. After a week of no problems, I stopped the daily Hot Pick, and I haven't had any serious problems since.
Your mileage may vary, of course.
Hopefully others will chime in with their experiences.
Good luck!
Dawn