Some games he hasn't played, but then the coach always said, 'The best player for me today was Kasper.
He didn't score, but he made space for the others,'" Riseth said.
Highlighting his presence off the pitch, Riseth identified the forward's leadership attributes alongside former teammates in Norway. "He's also a leader.
Him and the captain Partick Berg are the main players.
If it's not going so well during the game, they talk with all the players and get them on the track again.
So he is someone who wants to play well but also expects from his teammates, they have to also play well," Riseth said.
Addressing the transition from smaller domestic crowds to playing in front of 60,000 supporters at Celtic Park, Riseth expressed confidence in Hogh's experience at top European venues.
"For him, it's not new to play in front of 60,000 people. That's normal for Bodo/Glimt.
One week they play for 10,000 and next week they play for 60,000, 70,000 in the Champions League.
I don't think it's going to be a problem for him," Riseth said.
Riseth concluded by noting the unique atmosphere awaiting the forward in Scotland and his potential long-term career trajectory.
"But it's a special atmosphere in Glasgow.
I'm going to call and talk with him about what you can expect when you come to Glasgow.
That is different from all other teams if you're talking about the crowd and what they expect as well when you come to such a big club as Celtic.
I think he will make it," Riseth said.
Looking ahead to Hogh's progression, Riseth discussed the player's potential future in European football.
"I think this is a good step to go to a huge club like Celtic. I know he could go to Germany and also to Italy.
If he does well, he's a player who likes to stay as long as he can.
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But in the future, some other clubs will pick him up if he does so well. So we will see," Riseth said.