De Bruyne scored after coming on as a substitute during City's 3-1 League Cup semi-final win over Everton on Wednesday, but was stretchered off after sustaining a knee injury.
Manuel Pellegrini admitted afterwards that he feared De Bruyne had suffered medial ligament damage, but the Belgium international's representative has now rebuffed such suggestions.
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"According to Kevin, it was slightly less severe than it looked on TV," he told Sporza.
"Kevin felt a little crack in his knee. He thinks he has a twisted knee and ankle, no MCL damage.
"A little rest never hurts, but Kevin will always play football and is also at his best when he always plays."
Meanwhile, Everton goalkeeper Joel Robles has apologised for his reaction to De Bruyne's injury, as he repeatedly attempted to pull the City star to his feet while he writhed on the ground.
I would like to apologise to Kevin De Bruyne for my reaction to his injury. In the heat of the moment I didn't realise he was badly hurt. ..— Joel Robles (@joelroblesb) January 27, 2016
"I would like to apologise to Kevin De Bruyne for my reaction to his injury. In the heat of the moment I didn't realise he was badly hurt. I wish him all the best and a speedy recovery," he wrote on Twitter.