The Gunners won 3-0, with Zubimendi laying on a first goal for the club from Viktor Gyokeres.
"It was very easy - the team made it very easy for me,” he told arsenal.com. “I think the rest of the team have integrated very well, I think the people on and off the pitch are very friendly.
“(Declan and Martin Odegaard) are top players, the best in their position. It's time to learn, adapt and enjoy it above all.
“It was an important game because we came from two defeats. It's true that they were friendlies, but this club doesn't understand defeats in any context, so it was an important game to win and start the pre-season with a good feeling.”
