Gains:

William Saliba (St Ettiene) - £28m

Nicolas Pepe (LOSC Lille) - £72m

Gabriel Martinelli (Ituano) - £6m

Dani Ceballos (Real Madrid) - Loan 

David Luiz (Chelsea) - £8m

Kieran Tierney (Celtic) - £25m

​

Losses:

Petr Cech (Retirement)

Aaron Ramsey (Juventus) - Free

Danny Welbeck (Watford) - Free

David Ospina (Napoli) - £3m

Takuma Asano (Partizan Belgrade) - £1m

Stephan Lichtsteiner (Released)

Xavier Amaechi (Hamburg) - £2m

William Saliba (St Ettiene) - Loan

Krystian Bielik (Derby) - £10m

Laurent Koscielny (Bordeaux) - £5m

Carl Jenkinson (Nottingham) - £2m

Eddie Nketiah (Leeds) - Loan

Alex Iwobi (Everton) - £40m

Dominic Thompson (Brentford) - £3m

Kelechi Nwakali (Huesca) - Free

Nacho Monreal (Sociedad) - £250k

Mohamed Elneny (Besiktas) - Loan

Henrikh Mkhitaryan (Roma) - Loan

​