Experienced goalkeeper Valdes has been released by Manchester United after making just two first-team appearances, while Liverpool have decided not to retain the services of veteran centre-back Toure.
Adebayor has parted ways with Crystal Palace after failing to nail down a regular starting place under manager Alan Pardew.
Arsenal have released midfielders Mikel Arteta, Mathieu Flamini and Tomas Rosicky, while Manchester City have shown defender Martin Demichelis the door at the Etihad.
Elsewhere, Everton have released Pienaar and long-serving duo Tony Hibbert and Leon Osman.
The full list of released players:
AFC Bournemouth
Carmichael, Joshua Lewis
Distin, Sylvain
Muleba, Jonathan Mukendi
Stockley, Jayden Connor
Wakefield, Joshua
Zubar, Stephane
Arsenal
Arteta Amatriain, Mikel
Flamini, Mathieu
Rosicky, Tomas
Aston Villa
Bannister, Charlie Brendan Alec
Donacien, Janoi
Kinsella, Lewis
Lyons-Foster, Kodi
N'Zogbia, Charles
Richardson, Kieran Edward
Siegrist, Benjamin Kevin
Webb, Joshua John
Chelsea
Amelia, Marco
Musonda, Tika Kafusha
Wright, Kevin
Crystal Palace
Adebayor, Emmanuel
Allassani, Reise Malcolm
Breimyr, Andreas Malde
Chamakh, Marouane
Dymond, Connor William
Forte, Spencer Ellis Henderson
George, Matthew
Gregory, David Michael
Hangeland, Brede Paulsen
Hoare, William James
Kettings, Christopher David
Mariappa, Adrian Joseph
McCarthy, Patrick
Pain, Oliver David
Scales, Christian Stephen
Everton
Graham, Aidan James
Hibbert, Anthony James
Osman, Leon
Pienaar, Steven
Rohde, Felipe Mattioni
Stanek, Jindrich
Thorniley, Jordan
Leicester City
Bailey, Kyle Stuart
Barmby, Jack
Blyth, Jacob Mathew
Hammond, Dean John
Hassall, Aaron
Kelly, Michael Eamon James
King, Keenan Rakwarne
Konchesky, Paul Martyn
Maddison, Jonathan
Panayiotou, Harrison Andreas
Schwarzer, Mark
Smith-Varnam, Max Presley
Watson, Ryan
Liverpool
Brewitt, Tom
Cleary, Daniel
Marsh, William George
McLaughlin, Ryan
O'Hanlon, Alex Joseph
Polgar, Kristof
Sanchez Diaz, Jose Enrique
Toure, Kolo Abib
Yesil, Samed
Manchester City
Albinson, Charlie
Demichelis, Martin Gaston
Oseni, Nathaniel Adeyomi Andrew
Tattum, Sam
Wright, Richard Ian
Manchester United
Dorrington, George Edward
Powell, Nicholas Edward
Rathbone, Oliver Michael
Valdes Arribas, Victor
Newcastle United
Taylor, Steven Vincent
Norwich City
Awuah, Reiss
Coker, Afolabi
Gafaiti, Adel
Hall-Johnson, Reece
King, Cameron
Loza, Jamar Kasheef
Norman, Cameron
Uade, Obasiarinse Idehaloise
Southampton
Britt, William David
Davis, Kelvin
Ramirez Pereyra, Gaston Exequiel
Stoke City
Barber, Benjamin Thomas
Dryden, Edward
Moseley, Bobby James
O'Reilly, Ryan
Odemwingie, Peter
Sidwell, Steven James
Skapetis, Petros
Watkins-Clark, Mason Bradley
Sunderland
Agnew, Liam John
Brown, Wesley Michael
Fletcher, Steven Kenneth
Graham, Daniel Anthony William
Harper, Stephen Alan
Mandron, Mikael
Smith, Martin
Swansea City
Alfei, Daniel Mark
Copp, Kyle Thomas
Demetriou, James Andreas
Fallon, Stephen
Gogic, Alexander
Hanley, Raheem Shaquille Rushan
Jones, Henry Lloyd
Lucas, Lee Paul
Owen, Gareth Thomas
Tottenham Hotspur
Sonupe, Emmanuel Olukolade
Watford
Byers, George William
Doherty, Josh
Ekstrand, Lars Hening Joel
Ikpeazu, Karl Anthony Uchechukwu
Johnson, Jorell James
Martin, Mahlando Javion
Mensah Jnr, Bernard Ayitey
Simpson, Luke Thomas
Young, Alfie Mac
West Bromwich Albion
Anichebe, Victor Chinedu
Nabi, Samir
Sessegnon, Stephane
West Ham United
Brown, Jordan Antonio
Chambers, Leo Alexander
Lee, Elliot Robert
Mavila, Nathan
Nasha, Amos Lawrence
O'Brien, Joseph Martin