William Saliba could make his Arsenal debut on Wednesday, but Mikel Arteta has warned it will take the defender time to adapt.
Dean Henderson reacted to his Manchester United debut following Tuesday's EFL Cup victory at Luton Town.
Chris Smalling was a hit at Roma last season but will remain a Manchester United player until his asking price is met.
Callum Hudson-Odoi and Antonio Rudiger are on the fringes at Chelsea and Frank Lampard is planning to trim his squad.
Juan Mata, Marcus Rashford and Mason Greenwood were all on target, though Dean Henderson made a vital contribution on his debut.
West Ham's meeting with Hull City went ahead despite David Moyes and two players learning they were positive for COVID-19 in the build-up.
Chelsea signed Thiago Silva for the experience, with the centre-back saying they would have signed Usain Bolt if they wanted speed.
After Leyton Orient confirmed several coronavirus positives, their EFL Cup third-round clash with Tottenham will not go ahead on Tuesday.
Kai Havertz has made a low-key start to his Chelsea career, but Frank Lampard knows the youngster will come good once he is fully fit.
Gareth Bale's second Spurs debut is on hold due to a knee issue, but Jose Mourinho thinks he will return earlier than expected.