Fabregas was pictured in a Barcelona shirt following a practical joke by several of his team-mates at Spain's celebrations in Madrid on Monday.
Barca defenders Carles Puyol and Gerard Pique were the instigators, forcing the shirt over their Spain team-mate's head with the collaboration of Liverpool goalkeeper Pepe Reina.
The mild-mannered Iniesta, though, says he had nothing to do with the prank.
"It wasn't anything to do with me - it was the other two (Puyol and Pique) who carried out the joke," he said.
"He is my team-mate and my friend and I wish him the best, and if he comes, we will all be delighted."