There is a Transfer Market, money and Sponsors. You will have money to spend, that your sponsors will make available to you, and you can trade players at a profit or even a loss of money to strengthen your team. This puts more control into your hands as manager and adds more fun and game elements.
You will get a new sponsor at the end of each season who will supply sponsor money. When doing deals on the transfer market, you may make a profit or a loss, but you cannot spend more than the money you have!