Accompanying De Bruyne is his father, Herwig, who spoke to reporters outside the Rome clinic where Kevin is now undergoing his tests.
He said: "Kevin is more interested in the sporting side, in being able to play at a high level.
"One of the reasons why he chose Italy is to continue playing at a high level, I repeat it has always been the most important thing for him."
Asked if the presence of coach Antonio Conte influenced his decision, De Bruyne Snr added: "For him, the sporting issue is important."