"He fought, he played really good and he scored goals and it's so important, we needed it".
Pep Guardiola's side are looking for a 13th straight league win at the Etihad Stadium.
However, De Bruyne again starred - setting up three goals to take his tally to 14 assists in the league this season.
Argentine striker Aguero netted all his goals in a devastating second half showing - twice finishing from Kevin de Bruyne's flawless passes, punishing a Kasper Schmeichel error by chipping into the net and curling in a sublime fourth.
"The City boss defended his call saying that a combination of injuries and a youth team game at the same time had contributed to his decision to travel to Turf Moor with just 17 players".
As TUKO.co.ke had formerly reported, the Leicester City winger accused his club of blocking his dream move to Manchester City.
United States airstrike kills 100 Syrian troops after 'unprovoked' assault on base
Russian Federation is a close ally of Assad and is helping the government bomb rebel-held targets. The Kremlin said Putin and Macron discussed the Syrian peace process in the phone call.
Mahrez released a statement on Friday in which he explained his absence from Leicester training.
According to a friend, Mahrez hasn't been in the right frame of mind to train or play for Leicester - how has that changed all of a sudden?
Raheem Sterling got proceedings underway inside three minutes, and while Leicester were level for almost 25 minutes, there were two undoubted stars of the show.
As some pointed out, City's bench did include academy graduates Brahim Diaz, who came on, and Tosin Adarabioyo, while the 21-year-old Oleksandr Zinchenko was also named, showing that Guardiola's bench did have a youthful feel to it.
Aguero has now scored 4+ goals in a Premier League match on three different occasions, more than any other player in the competition.
For more build up check out our match preview and see below for all the information on how to watch, along with team news and lineups when they come.