Newport County boss Warren Feeney has revealed he was turned down by Manchester City this week.
The Exiles head coach was eager to watch Pep Guardiola's side train in South Wales between their double-header against Swansea City, which kicked off with a 2-1 EFL Cup win on Wednesday night, and concludes in the Premier League on Saturday.
However, Feeney's proposal was rejected due to Guardiola's devotion to keeping everything he does behind closed doors.
"It was a big 'no' from them," Feeney told the BBC.
"There was a possibility, but I think it's Pep's ruthlessness that he likes to keep it all in house which you can understand as they're a world class team."
He added: "Guardiola? Yes, he's got unbelievable players, but I can tell you now, I know a few people who work for him and he's absolutely ruthless.
"He's got a great philosophy and knows what he wants, but he's still got that old school mentality.
"I read all the books on them (the great managers), you've got to learn from them."
Newport currently sit 22nd on the 24-team League Two table ahead of the weekend's clash wth bottom-placed Cambridge United at Rodney Parade.