Cech started in place on Bernd Leno, who joined Arsenal from Leverkusen in the summer. And after a mistake from the 36-year-old where he almost conceded an own goal, Leverkusen replied to one Tweet highlighting the error, saying: "We might know a guy..." which was followed by a 29-second video of Leno playing out from the back in a game for Leverkusen, with the caption: "In case you were all wondering how to play out from the back…"
Cech then sent a response on Twitter, saying: "@Arsenal we share important values which make us a big club not only on the football side . Fair competition, professionalism and sportsmanship are the biggest ones you teach young footballers and it's sad to see when other clubs don't share the same values. @bayer04—en."
Leverkusen replied to Cech's Twitter, claiming their original post was only "a bit of banter".
It read: "Hi Petr. It seems our joke about wanting to see Leno, our former player, in action has been taken a bit more harshly/personally than intended. It was only a bit of banter. We're all for the values you've stated and wish you and your big club all the best. Nice 1v1 save on Aguero!"