Director of football Rasmus Ankersen has said that the Brentford team need time to "fit together".
Thirteen players joined the Championship club over the summer with just four players having experience of playing in England before.
"There's been a lot of turnover in the squad and we knew it was going to take time to get everyone to fit together. We're working hard every day to find the concepts but it doesn't happen overnight," Ankersen told GetWestLondon.
"We can always improve and, at the moment, there is a lot to improve. When new players come together from different countries it's going to take time to get on the same page in terms of the tactical concept. We're seeing that process is taking a bit of time."
Brentford have picked up just four points from their first four league matches and sit 18th in the Championship table.
