Chelsea have taken to Twitter to have their say on the transfer of Czech Republic goalkeeper Petr Čech signed for their bitter rivals Arsenal for a fee of around £10 million on a four-year contract on 29 June 2015. here it must be mentioned that Gunners were also not behind when it came to mocking Chelsea fasn.

Cech played more than 400 games during his 11 years at Chelsea, but could make just seven appearances in the Premier League last season due to the presence of Thibaut Courtois.

The 33-year-old achieved huge success with the Blues, winning the Premier League title four times and the Champions League once among others.

The former Sparta Prague star also set a Chelsea goalkeeping record of 228 clean sheets in all competitions, beating the previous highest total of 208, set by former England international Peter Bonetti between 1960 and 1979.

Here are some reactions from Arsenal and Chelsea fans after the transfer.

First the Chelsea fans:

Classy touch from Cech with his heartfelt message to #CFC fans. Real gentleman of the game. Bittersweet but far too good to benchwarm.

— Tom Andrews (@CarefreeTom_182) June 30, 2015

Goodbye Petr Cech, We will miss you

— Firman Ilhami (@Firman_Ilhami) June 30, 2015

Arsenal fans celebrating the signing of Cech like they just won d UCL. #funny

— må§t3rmïñÐ (@N_S_Icon) June 30, 2015

The reason I say Petr Cech is traitor.. He left #CFC for rival club, he didn’t thanked José Mourinho, he is happy to leave #ChelseaFC

— I’m bhu Nyendak (@tenzinnyendak) June 30, 2015

Petr Cech is a big buy for any club. Good for Arsenal! #AFC Move on already Chelsea fans

Now the Arsenal fans:

@Arsenal @PetrCech I’m absolutely over the moon!! What a signing!!! #WelcomeCech

— Yung Pabζ (@Parmpal_) June 29, 2015

Ozil, Sanchez and now Cech. #GettingStronger #Afc #COYG

— holycheesesitsCOLLIN (@Collin___Philip) June 30, 2015

Great Pleasure in saying Welcome to Arsenal Petr Cech !!!! #GreatSigning #AFC

— Messi (@Jmessi_1) June 30, 2015

@Arsenal @PetrCech I am absolutely elated! #WelcomeCech

— Rónán [Little Seal] (@SeaIti) June 29, 2015

Ozil: Wenger called me I said YES Alexis:Wenger called me I said YES Cech: Wenger called me I said YES Fabregas: I called Wenger he said NO

— shahidpatka (@shahid_patka) June 30, 2015