For the record in this particular instance I don't have a dog in the fight, I am not English and I don't particularly like Tuchel, I am actually rather happy he is now employed elsewhere.
Having said that, in a general sense why is it that to play for a national team you have to hold citizenship of that country, but a coach, who arguably is more influential to most teams than any individual player, is allowed to be from anywhere?
FIFA Rules State,
Playing for a national team also requires you to be a citizen of the country you want to represent. FIFA, soccer's international governing body, stipulates that players can only represent the country where they hold citizenship. This is to ensure fairness and maintain the integrity of international competition.
How does England hiring Tuchel, or Potentially Klopp or Pep, the other names rumored, and probably preferred, and paying them what a good club team would pay them, so they can bring their extraordinary talents to England to improve the English national team, maintain fairness and integrity in the competition? When Bulgaria sacks their manager next do we assume they'll have the financial clout to hire managers of that caliber and keep the fairness and integrity of the competition?
I think Koeman is a disaster for the Dutch national team, but if I read tomorrow they sacked him for Pep than I would be furious, if we won with Pep as a coach it would feel like a victory with an asterisk next to it, now Pep might be used to that, but I prefer integrity be a key element of success.