The Spain international has been heavily linked with a move to the Premier League champions in recent weeks after Everton star snubbed a return to Stamford Bridge in favour of a £75m transfer to their bitter rivals Manchester United.
As a result, Chelsea have been forced to rethink their summer transfer plans as manager Antonio Conte looks to replace Diego Costa after informing the controversial striker that he is free to leave this summer.
Borussia Dortmund striker Aubameyang, Torino’s Italy international Belotti and Real Madrid star Morata have all been touted as potential options to replace Costa.
Former Tottenham goalkeeper Keller believes Morata is the best option for the defending champions of the three strikers.
“If you look at the way Chelsea play, they want to counter-attack quickly. Morata fits that role better than any of the others [Aubameyang or Belotti],” Keller told ESPN FC on Monday.
Chelsea won the Premier League title in Conte’s first season in charge at Stamford Bridge.
The west London side have already signed Manchester City goalkeeper Willy Caballero, AS Roma defender Antonio Rudiger and Monaco midfielder Tiemoue Bakayoko so far this summer.
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