The 44-year-old Norwegian lasted just 57 days in charge of Rovers before he was sacked by the Championship club in December 2012.
Berg has now revealed that he has been watching players on behalf of Norwich for the past eight months.
"Yes, I started working for them, I do believe it was in March," he told VG. "It's not like I have any real employment with them, but I take assignments where I see players and teams, write reports and give them feedback.
"I see one or two games a week, both the Premier League, where I have seen Liverpool's last three matches, Championship and League One.
"In addition to that, I have also travelled to Germany and seen a little Bundesliga football."
Berg enjoyed a successful playing career in England before retiring in 2004.