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.
However, this could be a good time to play them.
The Gabon worldwide has been impressive in the pre-season so he will likely start today's match.More news: Djokovic to third round, del Potro withdraws from Rogers Cup
Pep Guardiola's team are still the team to beat in the league.
Maitland-Niles isn't a natural left-back, although was deployed there on various occasions last season, and his right-footedness might help if Guardiola deploys Riyad Mahrez on the right flank, as the Algerian is always attempting to drift inside onto his left. But for me, I want to enjoy the way [we do it]. I know exactly what we did to achieve that, and that is where we start from. That's the basic principle.
'The important thing is to be ourselves.
And after just 14 minutes, Arsenal conceded their first goal of the season with Raheem Sterling was allowed to pick up the ball on the left corner of the box, ran inside and crashed a shot past Petr Cech in goal.More news: Idris Elba's James Bond-like tweet fuels 007 rumours
"They are signings who will do the basics and do them well". A strong bench contains Kevin de Bruyne, Vincent Kompany, Leroy Sane and Gabriel Jesus.
'We talked to some of them about how it was, ' revealed Guardiola.
"I want leaders in the team - every player at every time to have the capacity to show leadership, but these are the five players who have the possibility to be captain". Monreal, however, came back from the World Cup with a knock and was unable to take part in any pre-season training or matches since his return. Thus, he is definitely a huge threat for the Manchester City defence, likely to be led by English global John Stones. 'It hurts when you cannot let some of them play. It hurts a lot.
He said: "I think he'll realise it could have been worse".More news: Danny Ings: I wish LFC all the success
'It is not comfortable but if you want to compete in four competitions we cannot compete with just two good central defenders. We need four on the top level.