"I don't know why the police were involved. I think if we need police with that kind of problem we need the police more often! It was a minor, minor, minor, minor incident.
"We want to improve and the best way is to come out and give your opinion, if you don't come out with it you can never improve.
"I feel (the row) is an explanation of why we're doing well, that we're not just happy to turn up and play football, we are doing well because the players care about what they do.
"The disagreement was only about football. They are good friends, I can have a disagreement with you about something that concerns professional matters and still go out and have dinner together as friends. If life is to agree with everything your friends say then you are not friends to me."
Details of the clash leaked out after Norway TV broadcast footage of police boarding the bus. The row between Vieira and Lauren is understood to have flared after the Arsenal captain was blamed by the full-back for failing to provide enough cover down the right flank, where he was left exposed on several occasions during the game.
Other reports suggested Vieira blamed Lauren for failing to do enough to stop Rosenborg's equaliser.
