Newport County boss Michael Flynn wants to apologise to his opposite number at Tottenham, Mauricio Pochettino.
It appears a dossier that was prepared by Flynn on the Spurs team was leaked, which highlighted the strengths and weaknesses of the Spurs team – and how to exploit them in the match.
Newport got out of the game with a 1-1 draw, which earned them a replay that will take place at Wembley Stadium.
"I've dealt with the leak of the so-called secret dossier manager to manager. It's something we do on every team," said Flynn.
"It is a good tool. It gives you a lot of information, but it is what you do with it that is important.
"It got leaked and there is nothing I can do about it. Things have a habit of coming out – nothing is private these days. But there was no malice in it. I apologised on our behalf to Mauricio for it getting out.
"Mauricio and I exchanged numbers before the game in Newport. He shook my hand and gave me his details, which shows the class of him.
"I can't speak highly enough of him; he is one of my favourite managers. We've exchanged a couple of messages back and fore since then and there is no issue. He has bigger things to worry about.
"He's a class act and he will go to the very top because he is that good. That's why Real Madrid are looking at him."