The Manchester City boss is too focussed on the job in hand, which is the semi-final against Arsenal, to consider the possibility of a piece of football history.
The nearest City and Manchester United have come to a final was when they met in the 2011 semi-final at Wembley, when Yaya Toure’s goal sent them into the final, where they ended a 35-year trophy drought with victory over Stoke.
But United face Chelsea on Sunday, the day after the Blues take on the Gunners.
Sadly, if the final is a strictly Mancunian affair, no fans will be there to witness it, at Wembley on August 1, with football still subject to lockdown restrictions.
Guardiola was not about to get excited about the prospect, with his former assistant Mikel Arteta standing firmly in the way, especially after their surprise win over Liverpool in midweek.
“I would say that United have to beat Chelsea and we have to beat Arsenal to do this and, on both sides, that’s not easy,” he said.
“I don’t know what to say, I’m not even thinking for one second about (who) our opponent (could be in the final).
“I have struggled a lot in my career in the semi-finals. It was easier in the finals. I handled them much, much better.
“I’ve lost many more semis than finals I’ve played. It’s more difficult, and after we’ll see what happens.”
An all-Manchester clash could spark a lot of interest in a competition which has suffered a little in recent years due to the dominance of the Premier League and the Champions League.
But Guardiola says the FA Cup remains a big deal on a global scale.
“Memories of Cup finals, what makes it so great to people outside England,” he said.
“I think the cup in Spain is interesting, especially the final, but I think with the FA Cup it’s because hundreds of teams – I don’t know, millions of teams – can start in this competition, that’s what makes it special.
“And it’s just one game, not two legs, it makes it special.
“I think this country, England, you know better than me that the combination of the tradition and innovation is part of your culture and the tradition of the FA Cup… it’s great, it’s great.
“It’s a pity we cannot play with our fans and Arsenal’s fans, but it’s what it is. At the end we are finishing the Premier League and we are able to play the FA Cup. OK, it’s not the perfect situation but it’s good enough.”