Based on what little we've seen in pre-season, Liverpool and Arsenal both look better than the Manchester clubs, maybe even Spurs too. Chelsea however do not, they really do not.
Is it really so far-fetched that they could finish behind City, Chelsea, Arsenal and one of Spurs/Liverpool? Because I think fifth would represent a massive failure on his part.
Imo, Wenger can't win EPL without Henry.
They are a team with weakest mental strength in history.
About Man. Utd., this is where all Zlatan's teams ended during his career in big countries:
2005: Juventus 1st
2006: Juventus 1st
2007: Inter 1st
2008: Inter 1st
2009: Inter 1st
2010: Barcelona 1st
2011: Milan 1st
2012: Milan 2nd (lost a title to Juventus by 4 points)
2013: Psg 1st
2014: Psg 1st
2015: Psg 1st
2016: Psg 1st
In the last 12 years in top leagues, Zlatan has 11 titles and he finished 2nd once.
Zlatan failed at Barca, but in all other clubs, he was a key man, and an awesome player for League championships.
He is the master for smaller and midtable teams.
He almost never had a dip in form (Neymar's style) when he'll go missing for 2-3 Months without goals.
He'll just bang goals regularly (like 1 goal in 2 matches) against any smaller/midtable team in sun, rain, snow or during an earthquake
So, imo, I just don't see how a team with Zlatan (if he'll stay injury free) can end as 5th in EPL.
My prediction is that Man Utd will finish in Top3, and I wouldn't be surprised at all with 1st or 2nd place even in Mou's+Zlatan's 1st season.