"It is very easy to be next to him on the pitch because he tries to be everywhere to help the team, to score goals, with assists, to tackle and recover balls". "Arsenal has always played offensive football but under Jose, the team at United was playing a bit differently".
"When I arrived here, the first meeting was with Ivan. I think about the match today first, then training tomorrow, the match on Saturday to continue our preparation", the Spaniard said.
Emery also insisted that while no-one has yet been chosen to succeed Per Mertesacker as club captain, he wishes to have "five captains" in his side for next season.
Atletico Madrid goalkeeper Antonio Adan saved three penalties and scored the winning kick as Arsenal lost their International Champions Cup match.
The Gunners and Atletico will stay in Singapore for the rest of July to play one more match.
He said: "I had no idea that the manager was going to change".
"This is not yet official, this decision", Emery said.
"As soon as I came to Arsenal I felt the warmth of this team".
"I don't know, maybe something was wrong or something was not the way I wanted, but it's life and it keeps going and I was looking forward to a new chapter. Aaron has the condition to be one of the captains".
Winger Reiss Nelson, 19, and midfielders Matteo Guendouzi, 19, and Emile Smith-Rowe, 17, all brought different things to the table yesterday but what they offered in common is a chance for Gunners fans to have hope in the future.
"He is starting today because his performances are good in each training session", said Emery. "Aaron is an important player for us".