The Argentine striker came very close to moving to Stamford Bridge. Chelsea were working on a deal to bring Aguero to the club before he joined Manchester City. He moved to Manchester in 2011 and he has been the most prolific player who scored 173 goals. Also, he helped City to win four Premier League titles and FA Cup.
In fact, Chelsea made the first inquiry for Aguero tow years before he joined City. Negotiations resumed while Ancelotti was in charge but captain Terry wielded a huge amount of influence.