Leicester City boss Brendan Rodgers is upset for fans after a disappointing summer market.
Wout Faes was the only outfield player Leicester signed this summer.
Rodgers said: "I'm in the know within the club and frustrated for the supporters outside who aren't.
"They see all the other teams getting lots of players in and we're not getting any so there's that little sense of frustration. But I can only look at the team and what I can control.
"For the first game here against Brentford we were excellent for an hour and we should have won the game but ended up drawing.
"Against Southampton we played really well, it's 1-0 and we somehow found a way to lose. At Arsenal we were beaten by the better team. Chelsea we should have got something from and then against Manchester United I thought we deserved something.
"It's not as though the players are downing tools. We're giving everything but we're making some mistakes and lacking quality in certain areas."