Rules: maximum of two sinnings per summer transfer window and one per winter transfer window.
Exception: If a player gets injured and will fall out from the start of the transferwindow for more than two months, a loan for the exact same position is allowed. But the loaned player is not allowed to have a higher rating than the injured player. In a cases where a player is injured for more than five months, a new player buy is allowed. But also, the rating cannot be higher than the injured one.