The Whites have used just 22 senior talents in the Premier League this season – the lowest tally in the division.
With such a low level of rotation, it’s inevitable that there are going to be some players who spend more time on the bench than others, but regardless of whether or not they get a run out, the club still needs to fork out on weekly wages – and in today's modern game, that’s by no means a small payout.
But which players are costing Premier League clubs to most to watch on from the sidelines week after week?
BettingOdds.com have crunched the numbers to take a closer look at which talents have established themselves as the most expensive unused substitutes in each top flight squad this term.
Click and scroll through their findings below...
1. Arsenal - Willian
Games as an unused substitute: 6 Weekly Wage: £192,308 Amount earned as an unused substitute: £1.15m (Photo by Alex Burstow/Getty Images) Photo: Alex Burstow
2. Aston Villa - Bjorn Engels
Games as an unused substitute: 22 Weekly Wage: £55,000 Amount earned as an unused substitute: £1.21m (Photo by Laurence Griffiths/Getty Images) Photo: Laurence Griffiths
3. Brighton - Davy Propper
Games as an unused substitute: 14 Weekly Wage: £45,000 Amount earned as an unused substitute: £630,000 (Photo by Clive Brunskill/Getty Images) Photo: Clive Brunskill
4. Burnley - Dale Stephens
Games as an unused substitute: 18 Weekly Wage: £35,000 Amount earned as an unused substitute: £630,000 (Photo by Alex Pantling/Getty Images) Photo: Alex Pantling
5. Chelsea - Kepa Arrizabalaga
Games as an unused substitute: 27 Weekly Wage: £150,000 Amount earned as an unused substitute: £4.05m (Photo by Denis Doyle/Getty Images) Photo: Denis Doyle
6. Crystal Palace - Michy Batshuayi
Games as an unused substitute: 15 Weekly Wage: £90,000 Amount earned as an unused substitute: £1.35m (Photo by Clive Brunskill/Getty Images) Photo: Clive Brunskill