'We need to continue working calmly in our bodies and our mentality, ' he said.
Arsenal have rescinded their offer of a new deal, meaning Ramsey could leave on a free transfer next summer when his contract expires.
"We need to improve because for example the match against Fulham was a very good result and a very good game for 90 minutes".
The pair have won both of their opening Europa League fixtures but Arsenal's hopes of taking control of the group will be hit by having to face the Foxes on Monday after the game was moved for television.
He has pointed to Liverpool and Manchester City as the two potential candidates for the title, not mentioning Chelsea despite keeping their second position place.
"I think the difficulty now is to not relax", said Emery ahead of Monday's visit of Leicester to the Emirates. "The TV is [free] to choose the matches Friday, Sunday, Monday", he said. Arsenal's attacking trio of Alexandre Lacazette (five goals), Pierre-Emerick Aubameyang (six goals) and Danny Welbeck (four goals) is quite something, as is a midfield that boasts Mesut Ozil, Aaron Ramsey, Alex Iwobi, Henrikh Mkhitaryan, Granit Xhaka and Lucas Torreira. We want to play a lot of matches.
"Maybe for Monday it's hard [for him to play]".
Google's new Pixel phones may find it hard to find buyers
And once more the company looks to be playing catch-up with Amazon , whose Echo Show and Spot devices have been out for a while. Callers are warned that they are talking to a robot and that a transcript would be made. "It's mostly about convenience here".
"The first two matches we lost against Manchester City and Chelsea".
"I think you've got to look at the situation and ask, 'How many top teams in the Premier League and elsewhere could he get in?' And you'd have to say them all - and that speaks volumes about the type of player he is".
Ramsey said during the worldwide break that he has no intention of pushing for a move in January, and Emery urged the midfielder to stay focused on the next match.
'The football, the future is tomorrow.
"My reason, I explain to every player and to you also, I want the mentality for the next match".
Emery has constantly called for improvement from his players despite the fact they have strung together nine wins for the first time in 11 years.