On the teenager, Emery added: "It's his first match here in the Premier League".
Emery and his team certainly had to hit the ground running, as the regular season opener came against an opponent that broke the Premiership records for points, victories, goals, goal differential and title winning margin last season.
Unai Emery has complimented his Arsenal players for "taking more responsibility" in the second half of their 2-0 loss against Manchester City. But Emery insisted Welbeck won't be one of those leaving the club as the rest of the continental transfer season plays out, while saying David Ospina, Carl Jenkinson and Joel Campbell would be allowed to leave if they wanted.
It is great to know they are enjoyng themselves, but I wonder if it's enough to get over our inferiority complex against City. He'd liked to have scored a goal and he tried to, but I'm sure in the European qualifiers he will score goals for his country.
The France global missed most of last season with an injury and Guardiola admitted his return is still a work in progress.
"We arrived after a hard season and I told him I want to help him and would like him to be happy". Perhaps we'll see more from him when Lucas Torreira is installed as his regular partner.
"Mendy has a lot of things to improve". This could be a rude welcome to Unai Emery's first match in charge Arsenal. One crunching challenge on Arsenal new boy Matteo Guendouzi resulted in a booking, but the tackle was more enthusiastic than malicious.
While fans may have been hoping for an easier start to the campaign, some had said it may be the best time to play Pep Guardiola's men. "I thought we did it pretty well".
"When we are thinking in an attacking moment, I want the goalkeeper thinking for that, he is the first".