Speaking after Manchester City's 2-1 win over West Ham in which Silva scored a late victor, Platt revealed his doubts on the Spanish playmaker when he signed in the summer of 2010.
"He said that?" said Guardiola when asked about Pogba's comments.
Whereas the Citizens are top of the table having won 13 games and scored 44 goals, West Ham are 19th with a goal difference of -18.
"In the end I think it was just an expression".
The fixture will see Premier League leaders City visit their closest rivals in a crucial match, but they reportedly have seen a request to film footage for their Amazon Prime documentary turned down.
For the second time in a week, following Wednesday's clash against Southampton, Guardiola lamented that the opposition at the Etihad Stadium sat deep and tried to run down the clock in the hope of getting a draw.
He combated West Ham's defensive strategy by replacing Danilo for striker Gabriel Jesus at half-time, and switching his system from 4-3-3 to 4-2-4, with the Brazilian alongside Sergio Aguero up front and Raheem Sterling and Leroy Sane operating on the wings. "We can play the same way".
Manchester United teams also have a reputation for scoring late, particularly during "Fergie time" - a phrase coined to describe the extra minutes of stoppage time the Red Devils would get under former manager Alex Ferguson.
"I was not here in that period, but of course you have to have that". "It showed what we are".
"Hopefully in the future opponents can try to play and maybe it will be easier. I don't think we will be in trouble", he said. I thought this performance gives us hope it can be done.
"We spoke a lot about defending set-pieces but they are taller", he said of West Ham.
West Ham took the lead on the stroke of halftime through defender Angelo Ogbonna, before Nicolas Otamendi equalized early in the second half and Silva sealed a 20th straight win for City in all competitions.
"We have to respect them and the best respect to them is to be serious and play the strongest team possible".
"I really want the football to be attacking, but we are playing against a team that we can hardly get the ball so what are you going to do?"