"I think that's a very good question and also a very good comparison with Wirtz," Frank said.
"Also a very good player, just like Xavi a very good player. Coming into a new country, a new club, new city. Just need to settle in.
"And it is part of it. We're all getting judged every game but we also need to see the little bit bigger perspective and see it over time. I always look for glimpses and bits of pieces we're working at.
"For example, Xavi I think there were some good bits. Worked with him and asked him more to be arriving in the box, which when I looked at the game back he did.
"Was there the big eye-catching moment? No. But there was good glimpses so I think it's constantly going a bit in the right direction."