Emery is exactly the sort of manager we'd need... if we were a Spanish club. Not convinced he can communicate as effectively as his approach demands over here.
Rose would be a gamble.
People who think Pochettino is realistic are unfortunately in dreamland. He'll keep his stock high and wait for a bigger profile club to need a manager. There are enough about.
Potter might be possible - I also share the worries we'd destroy his career but I suppose that would apply to any potentially decent young manager! To some extent even he'd be a risk, but is clearly a better coach than Gerrard.
Rodgers seems the most realistic option to me and probably suits where we are.