Backwards. I'd make sure that person didn't stay in the company. "One dirty fish muddies the whole pond" It's not personal or malicious - they're just not the right fit. A great skill set, while very important is always secondary to cultural fit if you really want your company to flourish.
Your question is very interesting and gives me a feeling you have a real commitment for success because it makes me feel you care for your team. If this question could be fully answered in a couple of lines, you can imagine all managers and executives would lead their teams successfully. The ...
I would directly contact a list of companies and try to get a direct answer. Of course, you can try googling since you can find just about anything on the web. Give me a call for more advice.