Top Premier League storylines after international break: Isak's Liverpool debut, Ange-ball returns

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And the heat is rising in Manchester as rival managers Pep Guardiola and Ruben Amorim attempt to prevent bad starts from becoming even worse in a high-stakes matchup at the Etihad Stadium.

After a two-week shutdown just three games into the season, here is what to watch for as the Premier League slips back into gear.

Are Nottingham Forest ready for Ange-ball?

There was no real surprise about Nuno Espírito Santo's exit as Forest coach this week after a public admission that his relationship with club owner Evangelos Marinakis had broken down in recent months.



Marcus Rashford, Rasmus Højlund and Antony all failed to live up to expectations at Old Trafford.

Rashford (Barcelona), Højlund (Napoli) and Antony (Real Betis) moved overseas this summer in an attempt to kick-start their careers, but Garnacho (Chelsea) and Jadon Sancho (Aston Villa) have each been handed a shot at Premier League redemption.

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- Ogden: Man United let goalkeeper problem fester.

Will Onana exit solve it?

Sancho's loan to Villa, after spending the past 18 months on loan to Borussia Dortmund and Chelsea respectively, could be the 25-year-old's last chance to save his Premier League career.

We'll soon find out.

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Isak: 'Not everyone has full picture' of Liverpool transfer

Alexander Isak talks about his deadline day move to Liverpool from Newcastle that ended a summer-long transfer saga.

A derby neither Guardiola nor Amorim can afford to lose

By losing two and winning one of their first three Premier League games, Manchester City have made their worst start to a season since 2004-05.

But it hasn't been much better for Amorim's United, whose slow start to the season -- four points from three games -- has been made much worse by the second-round Carabao Cup defeat against League Two side Grimsby Town.

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Dan Thomas is joined by Craig Burley, Shaka Hislop and others to bring you the latest highlights and debate the biggest storylines.

It feels like City and United enter Sunday's clash at the Etihad knowing they are each one defeat from a crisis.

Both Guardiola and Amorim also have big goalkeeping dilemmas to solve, with the City boss needing to decide whether to hand Gianluigi Donnarumma his debut after his deadline-day move from Paris Saint-Germain, and Amorim having to choose between the error-prone Altay Bayindir and 23-year-old Senne Lammens after his arrival from Royal Antwerp.

Martínez made a tearful farewell to Aston Villa fans at the end of this past season, but despite a summer of transfer speculation linking the Argentina goalkeeper with Manchester United, the 33-year-old failed to get a move away from Villa Park.