I have started playing with Stuttgart and after the squad registration for the german first division I bought five players(Jadson - 12.75 mil. euros in 4 years, Mirel Radol - also 12.75 mil. in 4 years, Ilsinho on free transfer, Isaac Vorsah on a loan to buy deal and Andrej Kramarić on a loan to buy deal) I don't know how to register those players so that I can play with them in league. Can anyone help me?