Following the 5-2 defeat by Arsenal, the 28-year-old admitted his disappointment at not adding some proven Premier League players to the squad in the summer.
He told reporters: "We are in big trouble. We should have bought some decent players in the transfer window. We are a good Championship team trying to compete in the Premier League, that's it."
But McDermott has brushed off any apparent negative undertones from Kebe, insisting his comments should be shown in a positive light.
The 51-year-old told a press conference: "What it shows is that Jimmy Kebe, like every other player here, cares. He really cares, we all care.
"Jimmy cared last season when he signed a new contract. He wanted the club to get promoted, which we did.
|5/4||Brian McDermott is 5/4 with PaddyPower to be the next sacked Premier League manager|
"Jimmy Kebe loves his football, he loves this club, he loves working for us. He's very much part of what we're trying to do here.
"The owner cares, the chairman cares, I care, the fans care, Jimmy Kebe cares. All our players want the club to do well, first and foremost.
"Let's hope a 'good Championship side' can get the points we need to get to wherever we need to get to.
"I'd like to think that we have enough decent players and that we can get the points we need. Time will tell on that.
"The summer's gone and there's nothing we can do to change what happened. All we can do is affect what happens now."