Following this rejection, Antonio Conte has been left to look at other options, and has been linked with moves for Alvaro Morata, Andrea Belotti, Pierre-Emerick Aubameyang, and now Manchester City striker, Sergio Aguero.
When asked if Aguero would stay at City this summer, Khaldoon Al Mubarak said, "Absolutely". There's never been a doubt about that.
But the Argentinean worldwide could push for a move as there are doubts over whether he fits in to Pep Guardiola's system and he lost his place to Jesus Gabriel last season before the Brazilian got injured. I've read a lot of the speculation on this and it's ridiculous.
And one of those targets is understood to be Manchester City hitman Sergio Aguero.
Chelsea need to sign a striker after it emerged that Diego Costa had no future at the club despite playing a large role in the Blues' Premier League title triumph last season, scoring 22 goals in all competitions before being told by manager Antonio Conte that he was not in his plans.
Sky Sports reporter Kaveh Solhekol claims Chelsea are looking to take advantage of that and complete a shock swoop this summer.
'Having Sergio Aguero as part of the squad is an absolute must.
Mark Hughes has confirmed interest in signing Chelsea's Kurt Zouma on loan and says he is "very hopeful" that the deal will materialise.
The Argentine global has scored 122 times for the Citizens in the six years he has been playing in the blue half of Manchester.