New Arsenal goalkeeper Petr Cech has warned his former Chelsea teammates there will be "no friends" in the Community Shield final, but calmed rumours that his relationship with Jose Mourinho has soured since his summer move to the Emirates Stadium.

The Czech Republic international put an end to his spell at Stamford Bridge after 11 seasons to make the move to their North London rivals, with the Portuguese boss opting to hand the number one role to Thibaut Courtois for most of the previous campaign.

And with the Blues winning the Premier League last season, while the Gunners bested Aston Villa for the FA Cup, destiny has triumphed to force Cech to make his competitive debut for his new side against his old one.

The 33-year-old custodian admitted it will be an emotional encounter for him but insisted that he will make every effort to secure the Community Shield for Arsenal.

"It'll be an unknown feeling for me to play against Chelsea. Once I am on the pitch I want to win, I want the best for my teammates, my club and the fans," he said, as quoted by Standard Sport. "For those 90 minutes there are no friends."

Meanwhile, Cech thanked Chelsea for their understanding in letting him move to a Premier league rival, insisting the decision has not hurt his relationship with Mourinho.

"Chelsea could have said no to me and said I must sit out the final year of my contract. I am grateful to the owner [Roman] Abramovich for giving permission. Has it soured relations between myself and Jose? Not at all. He made his decision but that will never change the respect we have for each other."