Paris St-Germain are set to rival Manchester United in the race to sign Benfica's 19-year-old Portugal international midfielder Joao Neves, while Barcelona have agreed a deal in principle for Athletic Bilbao's 21-year-old Spain forward Nico Williams.
Manchester United are eager to finalize the signing of Bayern Munich's 24-year-old Netherlands defender Matthijs de Ligt promptly after Euro 2024.
United also plan to reinforce their midfield this summer before considering offers for 27-year-old Scotland midfielder Scott McTominay.
Arsenal have accepted a loan offer from Lazio for their 24-year-old Portuguese full-back Nuno Tavares, with an obligation to buy for between £6m and £7m.
Chelsea have decided not to trigger 26-year-old Spain forward Dani Olmo's £50m release clause at RB Leipzig.
English centre-back Jacob Greaves, 23, has completed his Ipswich Town medical ahead of a potential move from Hull City.
Liverpool, Bayern Munich, and Real Madrid are potential destinations for 29-year-old France midfielder Adrien Rabiot, who is a free agent after his Juventus contract expired last month.
Marseille are interested in signing Arsenal's 25-year-old England striker Eddie Nketiah.
Bayern Munich are looking to sign Netherlands forward Xavi Simons, 21, from Paris St-Germain.
Monaco have rejected a €30m (£25.5m) bid from Nottingham Forest for 25-year-old France midfielder Youssouf Fofana, who has since agreed terms with AC Milan.
Portugal midfielder Joao Palhinha, 29, will complete his move from Fulham to Bayern Munich in the next 24 hours.