I'm not sure what 5m will get you these days, but if Kone comes here, I'm sure he will do well, so let's see.
My 'only' concern is that our team are getting old, and will need to be revitalised with money we may not have in a few years time, so while we can spend, just try and spend wisely.
Had we bought Kone for 5m the day after he tore Heitinga a new one, most fans would have been very excited, as the guy is clearly a very classy player and 5m is probably a bargain if it works out, Martinez knows better than any of us about the guy, so if he does bring him in, we need to support the decision.
As long as we add younger players I'll be content.