The former Manchester United midfielder took on Barca when he was in charge of Celtic in 2008, and remains impressed with their possession based style of play.
"How to beat Barcelona? Well, you visit a church or chapel – whatever your preference is – and just hope," Strachan was quoted as saying by the Daily Record.
"Everybody has tried to take Barcelona on and they’ve all tried different systems. But trust me, it’s good players who make the difference. Good men win games.
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"When Manchester United came to play us they got 340-odd passes. I think AC Milan made 360 or so. But Barcelona came to Celtic Park and completed 700 passes. We did analysis with our Prozone system. I looked at the analyst the next morning and said ‘there’s something wrong with Prozone’."
Celtic lock horns with Barcelona on October 23 at Camp Nou.