"I think I need to make a call to both of them [Liam and Noel]," Haaland told Sky Sports after his hat-trick.
The striker also said he was reaping the rewards of having an extended summer holiday as he did not participate in the European Championship with Norway.
"I feel good, I feel energised. I had a long vacation and pre-season, I'm feeling good. The years I've been here have gone really quick, bam bam bam. Now I've got rest in my body," he added.
"I feel good and ready for more. Only footballers know how important it is to have a long enough break. You need to calm down your body and your mind because it's a long season and it's not as easy as everyone thinks. I'm happy to start again. I'm feeling fresh and feeling good."