No need for the ?
Bunn, Hutton & Kozak this year 2017
Gabby, Sanchez and Cissokho next year 2018
Gil, Richards, Elphick, Jedinak, De Laet, Baker, Green, Lyden, Steer 2019
Everyone else is contracted until 2020
FWIW Johnstone's contract at Man Utd is until 2018