Some were instant crowd favourites while others have yet to or didn't kick a ball for the first team. Scroll through the pictures below to see who they signed, where they signed from and how much they paid for each player. Transfer fees courtesy: www.transfermarkt.co.uk
1. Jurgen Locadia 4-10
Signed from: PSV Eindhoven. Fee: 15.3m. Arrived 2017-18
2. Jose Izquierdo 6-10
Signed from: Club Brugge. Fee: 13.5m. Arrived 2017-18
3. Davy Propper 8-10
Signed from PSV Eindhoven. Fee: 11.7m. Arrived 2017-18
4. Maty Ryan 9-10
Signed from Valencia. Fee: 5.40m. Arrived 2017-18