Mr Bridge said: "On balance, the earlier deadline for the transfer in of players may have contributed towards a reduction in gross player transfer spending by the Premier League clubs".
"Like any big club, they need some silverware - in his first season at Old Trafford, 2016-17, Mourinho won two trophies - the League Cup and Europa League - but he won nothing last season".
"When I listen, when I read, not much but sometimes I do, is hard to believe that we finished second, because you are capable of making people that finish second look like they were relegated, and people who win nothing, finish below us, and you make them look like serial winners".
City invested heavily ahead of the 2017-18 season, buying players including Kyle Walker, Benjamin Mendy, Ederson and Bernardo Silva, and Guardiola subsequently led the club to the Premier League title by a record-breaking 19 points.
"I am not focused on back-to-back".
Despite the drop in the gross figure, the net spend by Premier League clubs to this point is a record £865m - inflated by a busy deadline day for the likes of Fulham, with five signings, and Everton whose additions included Barcelona pair Yerry Mina and Andre Gomes.
Ben Foster is their most high-profile signing, a proven Premier League goalkeeper, but hardly likely to trigger a stampede outside the club shop.
Baker Mayfield throws two touchdown passes, impresses in National Football League preseason debut
In fact, it looked like they were back at Oklahoma and Penn State, respectively, competing for the Heisman Trophy. Mayfield's National Football League debut got off to a rocky start after some conservative play-calling.
"They returned on Monday, trained Monday, Tuesday, Wednesday and today so you can imagine they are not really fit and ready but we have needs", Mourinho said.
"Because it is very important how they feel and to understand how they think they can help or not help".
Manchester United have been hit by injuries throughout the pre-season tour of the United States and there are plenty of first-team stars that have only just returned from their holidays due to exploits in the World Cup this summer.
"Is hard for me to understand, to feel, to believe we finish second".
"My view is that, first of all, it is hard for me to believe we finished second because when I listen, when I read - not much but sometimes I do - you [the media] are capable of making people that finish second look like they were relegated, and people who win nothing, finish below us, you make them look like serial winners".