As a top flight manager, you will have the choice of selecting which team you want to manage come next season.
When the season reaches its climax, offers will come from a selection of teams. It will then be down to you to choose whether you want to stay on with your current team or look for pastures anew.
The better you perform, the better the team which will come in and make the offer.
There may also be opportunities to play in other leagues should an offer arrive from teams outside the league you currently play in