City have been tracking former Chelsea midfielder De Bruyne for most of the summer and are reportedly lining up a near £50m offer to his current club Wolfsburg.
And the Belgium international defender is convinced it would be a great piece of business if City were to seal a deal for his compatriot.
“Let me put it this way, he (De Bruyne) is definitely not going to make the team weaker. He’s a phenomenal player,” Kompany said.
“Our squad can become stronger by getting everyone in the right direction.
“We had so many players – and I was one of them, especially at the end of last season – who didn’t perform and if they do, then it’s like having six or seven new players. Then we do have a stronger squad.
“Players like Raheem and Delph, from what I’ve seen, will give us something different.”
Kompany also spoke about his side taking over the tag of favourites for the title after the first week.
“We are happy to let all the other ones be the favourites. For us, it’s a different position to be in and maybe a good challenge for the team to take on,” said the 29-year-old.
“There’s a lot of hunger in this team, a lot of desire to do well and the first hour on Monday was exceptional.
“We have shown what we can do and what every manager will say now is, why not do it every game?
“So far, it’s a 100 per cent record but let’s not get ahead of ourselves.”