Kelvin De Bruyne for now is still a Manchester City player and I don't even expect the Belgium international to leave the club till at the end of the current season. Kevin De Bruyne without doubt is one of the best player of the Manchester City squad and that's why the team was actually struggling to win games during the time he wasn't fit to play for the team. His impact in the club's last league game for Newcastle United which also was his first game fro the club in over four months has further explained his importance to the club.
That being said, age is no longer in the side of De Bruyne and I don't expect him to remain at City for the next 2 years. So definitely I know Manchester City are gonna try sign his replacement when he finally leaves the club and I also believe they can get a young player who'll play like him or even more
De Bryune have been very active for Manchester city for quite some seasons now after he left Wolfsburg and joined city in 2015, and he has impacted immensely to Manchester city's success ever since then as he has won the Champions League, and also won the premiership for five good times and some other trophies to his name while at Manchester city so should his contract at manchester ends he will definitely be missed by the club as he is always the best option in the midfield. Though Manchester city can get a replacement when he finally leaves the club but for now I can't really figure out any midfielder that can exploit what Kelvin De Bryune did for Manchester City.