It was a surprise to see Arsène Wenger at the Nou Camp on Wednesday night.
In the build up to Arsenal's Champions League Semi-Final second leg at Villarreal on Tuesday, the Frenchman had said he would not be dropping in on Barcelona v Milan the following night. However he switched his plans.
"I changed my mind for one simple reason," he said. "I saw the programme of Barcelona, and I felt that it was a unique opportunity to see both teams.
"If they qualified, Barcelona may be in a position where they never played with the same team [again this season]. They are nearly champions, and could decide to do what they want after that. This would work against us. I felt it was maybe the last opportunity for me to see them."
The home side did enough to hold off the challenge of Milan and set up a mouthwatering Champions League Final in Paris on May 17.
"They are a good side," said Wenger when asked for his assessment. "On the night, they played in a controlled way and never went for it completely.
"In fairness, the game could have gone both ways, but I always felt they had enough resources to find a goal if it was needed."Copyright 2017 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source