"I've played John Crew in training many times but never in a match," said the 26-year-old. "He's a big man like myself so it will be interesting. Most strikers will be a handful and he will be.
"I haven't given my team-mates inside information on John yet but if they ask me I will have a few things to tell them. He's very big so we'll be evenly matched."
Hangeland, along with fellow Fulham newcomer Erik Nevland, was involved in a relegation battle while at FK Viking.
Hodgson rescued the Norwegian club that season and Hangeland has tipped him to do the same at Craven Cottage.
"It was close at Viking but we made it in the end and hopefully history will repeat itself," he said.
"I was there for many years with Erik before Roy came in. He came in a similar situation to Fulham now.
"He knows how to organise the team well and get every player to do his best. That's what helped us at Viking and hopefully he can do the same again.
"Other than that I haven't been involved in relegation battles. I came from a top team in Denmark so it is a big change for me right now.
"Of course everyone would like to be at the top and it is not an easy situation to be in but you have to do your best to get results and we all know what we have to do."