For some reason i am only able to transfer like 5 players.
Is there any way to transfer the other people
or am i just doing something wrong?

are you buying as well as selling
you must have at least 16 players at all times

yes i have over 16 players,
but i can only see a few of them

Use the arrows next to the players' names that you see. You can scroll up and down your entire team by doing this.

You have to use srrows nex to "Sell player" to scrool up and down...
A bit strange, it took me quite a bit to figure it out.....
C Ya