Lewis Holtby complete a permanent move from Tottenham Hotspur to Bundesliga side Hamburg following a loan spell.
Southampton terminate the contract of £15m record signing Dani Osvaldo, who played only 14 Premier League games.
Petr Cech says Arsenal can challenge for the Premier League title next season after they "showed potential" with back-to-back FA Cup final wins.
Portugal striker Eder joins Swansea City on a three-year deal from Sporting Braga for a fee of around £5m.
Sunderland head coach Dick Advocaat has confirmed his new backroom staff for next season.
Glentoran go into Thursday's Europa League match against MSK Zilina without Curtis Allen and David Scullion.
Spanish side Rayo Vallecano release a kit which features a significant tribute to portions of society facing struggle.
Premier League newcomers Watford sign Czech Republic striker Matej Vydra from Italian side Udinese on a five-year deal.