The transfer window will open for 10 weeks, starting on the 27th of July 2020 and ending on the 5th of October 2020 in most countries in Europe.
Watford have signed right-back Jeremy Ngakia on a four-year deal following the expiry of his contract at West Ham United.
Sheffield Wednesday have signed centre-back Chey Dunkley for free from Wigan on a two-year deal.
Getafe have signed striker Cucho Hernandez from Watford on a season-long loan.
Benfica have signed winger Everton Soares from Gremio for €20-million and striker Gian-Luca Waldschmidt from Freiburg for €14-million, both on five-year contracts, plus centre-back Jan Vertonghen on a three-year deal after his Tottenham contract expired.
Stoke City have signed Scottish striker Steven Fletcher from Sheffield Wednesday on a free transfer.
Montpellier have signed goalkeeper Jonas Omlin from FC Basel for €6-million.
Celtic have signed Swiss striker Albian Ajeti from West Ham United for £4.5-million.
Leeds United have signed right-back Cody Drameh from Fulham for an undisclosed fee on a four-year contract.
Rennes have signed centre-back Nayef Aguerd from Dijon for €4-million on a four-year contract.
FC Koln have signed goalkeeper Ron-Robert Zieler from Hannover on a season-long loan.
Gillingham have signed Arsenal striker Trae Coyle on a season-long loan.
Legia Warsaw have signed midfielder Bartosz Kapustka from Leicester for an undisclosed fee on a two-year contract.
Cardiff have signed striker Kieffer Moore from Wigan for £2m on a three-year contract.