Even though Cesc Fabregas is not coaching Como, which is owned by a rich man, it is not even right for Cesc Fabregas to be in a hurry to leave Como and join Bayer Leverkusen because he just started his coaching career, and Cesc Fabregas needs to stay at Como and gain more experience about coaching so that he can be able to perform well in any club he will coach next.
As much as I agree with you, you know at some point someone has to kickstart his or her career from somewhere and Bayern Leverkusen might be just one of those clubs that he can use to spice up his coaching curriculum vitae. Bayern Leverkusen is an upgrade to Como and this might further project his career to possible bigger clubs around Europe. I read a rumour that Ten Hang has been contacted by Bayern Leverkusen and I don't how true that is but sooner or later we will know who's where and whose not.