The Red Devils coach has cut a sullen figure throughout pre-season with the former Chelsea boss unable to hide his dissatisfaction with Brazil global midfielder Fred being his sides only high profile signing.
It is no secret that Mourinho has been keen to add to his squad and would have liked to add a defender.
"It's not going to help the Premier League clubs because we're going to compete in Europe and in the Champions League but have 20 days less".
However, Guardiola says the pair arrived back from their holiday's in great condition and will therefore be available for selection against Arsenal on Sunday afternoon.
However, they finished 25 points back in the league as Pep Guardiola's men romped to the title with a record 100 points.
"So, the pressure is on and there is even speculation he might not last much longer in his job".
As for United, well, I'm unsure that all is well in the camp at Old Trafford; I really don't feel the team and players are totally behind the manager. We go with everything we have in that first match.
Of the players transferred-in, just £175m (14%) relate to intra-Premier League transfers, a record low proportion across the history of the summer transfer window.
United would be absolutely mad to let Pogba leave now that the transfer window in the Premier League has closed and they can not replace him until January.
The move was created to ease disruption in the first few weeks of the campaign after a number of high-profile players including Alexis Sanchez, Philippe Coutinho and Virgil van Dijk missed matches at the start of last season due to transfer speculation. Jose Mourinho's team have been unimpressive in pre-season and their only notable acquisition in the transfer market has been Brazilian midfielder Fred.
"We believe we can do better, dominate more and we will try to do it. What we are working on is the depth of the squad because you need to have that".
In an ironic twist of fate, United kick off the new season with an away trip to the King Power Stadium, where they will face off against Maguire - but he has forgotten the saga already.