Cahill regularly took the armband last season due to Terry's lack of first-team football, and was widely expected to be handed the role on a permanent basis.
Chelsea technical director Michael Emenalo said Morata can make a huge impact domestically as well as in the Champions League.
Possibilities were scarce for Arsenal and it was Chelsea that looked the more likely to rack up the game's fourth goal however, eventually, they had to opt for three - still more compared to enough for a comfy win.
After a frustrating start to the transfer window which saw the Premier League champions gazumped in their attempts to sign Romelu Lukaku by Manchester United. "Because he stayed in Chelsea for many years and played a lot of games and showed good characteristics to be this". Despite scoring 59 goals in his three seasons at Chelsea, the Spanish international's approach in front of goal has always been bullish and forced rather than precise and clinical.
Batshuayi, who scored the decisive goal at West Bromwich Albion as Chelsea won the Premier League in May, scored his first goals of the new season in style, curling an opener before striking home from the edge of the box.
Blues boss Antonio Conte was hopeful Pedro would continue on to Singapore with his team-mates when quizzed yesterday.
"I think last season was a little bit hard because it's not easy to play in the Premier League".
However, Conte has since come out and said that Costa was well aware back in January that he wouldn't be sticking around for another season. "My daughter is at an age when it's very important to see her grow, to stay every day with her".
The £70 million acquisition of Morata from Real Madrid, however, will go to some lengths to ease some of the concerns of not only the Blues' fans, but manager Antonio Conte too, who was growing increasingly frustrated at the lack of activity and length of time it took to complete deals.
Chelsea crushed Arsenal 3-0 in a preseason game in Beijing on Saturday but the friendly turned ugly as Pedro left the field with a bloodied face after a big collision with David Ospina.
2 goals in as two minutes from Willian (40) and also Batshuayi (42) placed Chelsea 2 up at the break in Beijing prior to the Belgian striker included his second 4 mins into the second half. "He is very young and has a lot of space and room to improve and I want to improve him a lot".
After a few minutes of medical attention on the ground, the Spanish worldwide walked off the pitch and did not return to the game.