I noticed you have 7 rostered players and your game shape is suffering as a result, I'd recommend buying cheap players for 3k or less and playing a few of them in easy regular season games and scrimmage games. Then fire them before their weekly salary would be paid. There's no severance pay for them, just the initial purchase fee. In the grand scheme of things it's not expensive at any level and it can come in handy heading into the playoffs. Game shape is a big deal. Mine's going to be disastrous if I make it any further in the cup (and I will).
But obviously when you get more money you'll want to buy real back ups.