Try using some shouts to work around em, depending on how you are playing and how they are playing.
What im trying to say is, have stability by not changing your instructions and tactic to often. Your players will get frustrated and dont realy know what to do, atleast take a year for your team to learn your structure and way of play, if your not taking on an ongoing project and contiue using the same formationg and way of play they did last year. Dont be in a rush of changing to much in your squad as many think they can rebuild a team and win everything the same year.
then you need to find out how your opposition play and how you can work around it using shouts etc.
I find stability, Match preporation and motivating highly important for a win.
EDIT: Also when signing new players depening on language and playstyle they use to play before how they will perform in your tactic stright away. Give them time to learn your way.