With a long injury list already, and the start of United's UEFA Champions League campaign to prepare for next week, Sir
Although Kagawa does not believe his back problem is serious, it was enough to keep him out of the 1-0 win in
And he is not sure how long he is going to be sidelined for.
"I felt a twinge in the back during practice when I was on the ball. I had some treatment but didn't want to risk causing the team trouble by playing," Kagawa told the Kyodo news agency.
"Obviously it's a shame I wasn't able to play.
"It's not that serious and I don't think it will keep me out for long."
English Premier League
Newcastle United boss Alan Pardew was keeping his own counsel on Tuesday after the club finally confirmed Joe Kinnear's arrival as director of football.