Shortly after Ismael Tajouri touched down in New York, he reached out to New York City FC’s biggest rival for advice.

Tajouri had joined NYCFC from Austrian giants Austria Wien in January. It was natural that he had questions about the Big Apple.

“We knew who the Yankees are,” Tajouri joked to The Post. “But it’s not so famous in [Austria] as it is here.”

So he sought advice from Red Bulls winger Danny Royer, who’s settled nicely on the left side for the Red Bulls in his third season. Tajouri had normal questions anyone has when moving to a new country: how to get around town, whether he needed a car, finding the best place to live.

“I just told him if he wants to find a nice place in Manhattan, it’s not going to be cheap,” Royer laughed.

“It’s different for me because I’m living in Jersey City, but I don’t think that would be a good idea for him because it’s way too far for him to get training and to the games.”

Of course, New York is a little different from Vienna, where both Royer and Tajouri spent time together at Austria Wien, one of the top clubs in Austrian Bundesliga. While they were both at the same club, the two teammates never actually overlapped on the field for a professional minute.

Royer, 27, was building his résumé in Austria’s top league, appearing in more than 30 league matches in two seasons for Austria Wien from 2013-15, while Tajouri, 23, was shuffling between Die Veilchen and Rehindorf Altach, where he spent three consecutive seasons on loan, bouncing back and forth from the top three tiers of Austrian soccer.

The closest they came in contact was on the training grounds in Vienna. When Tajouri made his first-team breakthrough in 2016, a season in which he scored eight goals, Royer had already left the club for Danish side FC Midtjylland before joining Red Bulls on loan the same year. He gained international club experience in the Champions League the past two seasons, where he played alongside the same teammates Royer had years before.

It was those mutual friends who encouraged Tajouri to get in contact with Royer.

“I didn’t know [Danny] so good, but they said Danny is very good and he’ll give you everything you want for information,” said Tajouri, who holds an Austrian passport. “I was very happy … he told me about [NYCFC] and gave me some tips. For me, it was very helping that he gave me those tips.”

Added Royer: “If he’s asking me something privately, of course I’m going to help him because that’s normal. But when we step on the field, it’s an opponent as every other opponent to me.”

On the field is where Tajouri is playing confidently, though sparingly. He’s featured in each of NYCFC’s first two games this season as a late second-half substitute, compiling just 25 minutes total on the right wing for NYCFC. He’s viewed as a depth option, someone to battle for minutes against Jesus Medina and Rodney Wallace, along with Jo Inge Berget, Jonathan Lewis and Ronald Matarrita.

The six NYCFC wingers likely will all get minutes when players leave on international duty, but at least for now, Tajouri will have to make his impact in limited minutes.

“I can play as a No. 10 or as a right or left winger,” said Tajouri. “But I think my first position is as a right winger. When I play there, I feel like that’s my position. I know what I can do and I know what to do there. But if [coach Patrick Vieira] asks me to play on the left, I’ll play on the leg or as a No. 10. I can play everywhere because I am here to help the team.”

The Swiss-born Libyan relishes working under Vieira, who he said was one of the biggest influences on him signing with NYCFC — “When you see that Patrick Vieira is the coach, you are more excited to join the club,” he said — along with working, and occasionally getting starstruck, next to David Villa.

“I want to help the team with how I play,” said Tajouri. “How I can make assists and score goals to make us get points. I will work very hard to be there, what I want and where the coach sees me.”