It is the successful older players from their 90s generation getting manager jobs based on their playing careers. Same thing happened with a lot of ours of the 70s and 80s eg Brucie, McMahon, Barnes, Aldridge, Nicol, Neal, Dalglish, Keegan, Toshack, Lawrenson, etc. By no means were all those obvious choices as managers and some of them proved to be rather s*** at it too.