I would personally be more optimistic about signing Charlie Austin than Kone.
Yes I know what some will say, Austin is a risk as he's never played in the Premier League whereas Kone is "proven".
Each to their own obviously, but rather than a 30 year old who has "proven" he can hit a massive 11 goals in 30 odd games, I'd be more intrigued to see what 24 year old Austin can do in the top flight for a reported 4.5 million.
He may turn out Crap who knows, but he's done very well at Burnley and he MAY do well in the Premier League.
For that kind of money, Austin would be a more interesting signing for me.