Barcelona had just beaten the Hoops 2-1 at the Nou Camp in the Champions League when star midfielder Iniesta approached Wanyama for his shirt and the Kenyan has revealed how big a compliment it was to be acknowledged by one of the world's greats.
"It means so much to me. I also believe he understands the history of our club," said Wanyama.
"That's why I think he asked for my shirt.
"It's just a great thing swapping shirts with one of the best players in the world."
Celtic and Wanyama are preparing for their next Champions League clash with Barcelona at Parkhead tomorrow night. The Hoops sit second on the Group G table on four points from three matches, five points in arrears of group leaders Barca.