Instead, typically slack Fulham defending allowed the unmarked Granit Xhaka to score from Alex Iwobi's measured cross after 25 minutes, and Arsenal were rarely troubled after that. "Our challenge now is to improve defensively". "We know very well that Seri is coming and we need to have one more player closer to him, not to let him play with the ball easily and I think when Ramsey is on the pitch he can do that but also help us in the attacking moment". Then came an injury from Mustafi in the first half so we changed to a back four.
Emery hinted signings are possible this month as the transfer window reopens.
The rules mean a club can only have two players on loan at one time from other Premier League sides.
A somewhat relieved Emery said after the final whistle: "We wanted to win and this result will give confidence".
It appears Harry Kane and Mohamed Salah have some company as they vie for the second straight season to be top scorer in the Premier League.
But Fulham made it a contest with a goal in the 69th minute by sub Aboubakar Kamara off a great cross from Ryan Sessegnon.
Fosu-Mensah, who is 21-years-old, is now on loan at Premier League side Fulham but could be sent back by the Cottagers having fallen out of favour under their new boss Claudio Ranieri.
Xhaka's third of the campaign means he has now scored as many goals this season as he did in his previous two at Arsenal, and his habit of making late runs into the box continued in the first half. We were a bit nervous at 2-1, but 4-1 makes us happy.
"I do feel it is important to provide some clarity so we can end this and focus on football".
"It is a odd match because when you come to Arsenal, you know the quality of players is different", he said. "Every match is crucial for us".