If it doesn't settle, it can easily sit down in the middle of your coral and sting them. A new anemone is always a danger from such when it is an established reef tank. They can settle where you put them if the light was strong enough and flow was right, but if you don't want to chance it I wouldn't do it. Condy are a 'cheaper anemone' and IMO
not worth it as there are much prettier anemone out there.