For Jose Mourinho, his second season at a football club has always brought success.
Zlatan's United career was ended prematurely with the striker suffering knee damage versus Anderlecht in April - resulting in surgery and a lengthy spell on the sidelines for the Swedish forward. "He's not ready to play tomorrow".
"There is no guarantee but naturally a manager in his second season knows the club and the players better".
The 20-year-old striker attracted attention in scoring the winning goal for England against Venezuela in the final of the under-20 World Cup in June, and is set for more games at Everton this season now Romelu Lukaku has joined Manchester United.
Even more so than his old foe Jose Mourinho across town at Manchester United, if Guardiola can not at the very least orchestrate a sustained title challenge, his gilded reputation will take a sizeable hit.
"We are in a position to do quality work better than we did in the first season, so I am convinced that our second season, in terms of the quality of our team, is going to be better".
Mourinho still speaks of free agent Ibrahimovic as part of the group, saying he is injured for the start of the season along with other "important players" like Luke Shaw, Ashley Young and Marcos Rojo. For the first time in 20 years, Arsene Wenger's side will be missing from the Champions League as a effect of its fifth-place Premier League finish.
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"I am very happy with Chelsea, but we don't know the future".
I've always liked Marko Arnautovic, he's given West Ham problems whenever he's played against them for Stoke and Javier Hernandez is an extremely exciting addition to the side.
"But we have players and if we can not strengthen the team in these areas, we have players that we trust".
"Last season two were not in Europe".
Runner-up Tottenham is yet to make an off-season signing though it nearly certainly will as it prepares to play at Wembley Stadium.
"We have a central midfielder and a striker, so obviously another player would be one coming from the sides, but we have players and if we can not strengthen then we have people we trust".
"So yes we'll look at as many good experiences as we can do, and that's for the whole of the season, not just the start".
One of which was against West Ham, United's opponents on Sunday as the new Premier League season gets underway.
Brighton and Huddersfield, both playing in the top-flight for the first time in the post-1992 Premier League era, have been breaking their club transfer records.