The Premier League is back this weekend - and we travel to Arsenal to begin the defence of our title.
Mourinho remains in the market ahead of the window slamming shut on Thursday, and Rooney hopes to see late movement that will make his former club more competitive.
"I will have to focus on the players I have in relation to the first three matches, because after Spurs there is an global break and I have a couple of weeks to recover people and prepare them better".
"They've got a manager in Jurgen Klopp who the players have got a lot of faith in and they've got fans who will keep this team going".
Having previously managed Barcelona and Bayern Munich, Guardiola is used to high expectations.
The Reds will start the new Premier League campaign with a clash against West Ham United at Anfield on Sunday.
"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.
As far as the rest are concerned, Paul Pogba, Jesse Lingard, Ashley Young and Marouane Fellaini are very unlikely to feature as they only returned to training on Monday.
"My view is that first of all is hard for me to believe we finished second", he added. I told that during pre-season.
"Is hard for me to understand, to feel, to believe we finish second - which I keep saying, and it is sometimes hard to believe, that I won eight championships and three Premier League's but I keep feeling the second last season was one of my biggest achievements in the game". "I keep saying that I won eight championships and three Premier Leagues but I keep feeling that second last season was one of my biggest achievements in the game".