How is it already the case? I had a look at your team history just then, and you have been playing for a number of seasons, but how do I know when it stops being you and starts being someone else? I believe that at the end of each season you have the option to rename your team for 100k. Wouldn't this make it hard to tell when the team started?
Maybe its just a personal preference but I don't really care what the managers that had my team before me did, as far as I'm concerned the moment I took over (this season) it is a brand new team with brand new players and no past.