Hard to do coming in 2/3 through the season and cash is non-existent.
One thing you can do Ilamaz, is snap up every 1 token free agent you can get your hands on, see if you can quickly train them up a point or two and sell them on. A few 300k resales like that and you can afford to pickup a decent 5 star player. don't be afraid to grab a few cheap, older 5*s at this point .. none of your players are going to be with your team by level 3 anyway.