The Southampton boss's heart may say one thing about his country but professional considerations would say another.
The Netherlands' Euro 2016 qualifying campaign was an outright disaster and a second coach could be at risk of losing his job because of it.
So is Koeman the answer? He certainly has the ability & experience. And Southampton certainly won't want to lose him.
But why would the 52-year-old leave the Saints at this moment in time?
Okay, there's an obvious reason. It's his country - and few would ever reject the call to manage their nation.
But saying no now isn't saying no forever. Koeman, by managerial standards, is relatively young. Considering the fact England boss Roy Hodgson is 68, the Southampton boss has at least a decade left to manage his country.
Now could be the worst time to take the Netherlands on. Not only is the squad in disarray but failure to qualify for Euro 2016 means Koeman would essentially be taking on a job that would have no meaning for months on end.
Koeman's next big target would be to qualify for a tournament in three years' time.
So why would he sacrifice Southampton's brilliant position in the Premier League for a few friendlies a year before beginning qualifying far off in the future?
From a footballing perspective, it makes little sense. It's only emotion that could persuade the Saints boss to save his country's current footballing mess.