Wolverhampton Wanderers have put four players, including Jamie O'Hara and Karl Henry, up for sale.
Roger Johnson and Stephen Ward have also been transfer-listed as the club prepare for life in League One.
"Following the squad's return to pre-season training this morning, head coach Kenny Jackett spoke individually to the four players to inform them of his decision," read a statement on Wolves' official website.
Wolves start their League One campaign at Preston North End on August 3.