Big squads and constant are part and parcel of the Premier League these days, and with such congested fixture schedules to contend with, it’s not hard to see why.
Of course, even taking all of that chopping and changing into account, there are still 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...

17. Tottenham Hotspur - Gareth Bale
Games as an unused substitute: 10 Weekly Wage: £250,000 Amount earned as an unused substitute: £2.5m (Photo by Jason Cairnduff - Pool/Getty Images) Photo: Pool

18. West Brom - Jake Livermore
Games as an unused substitute: 12 Weekly Wage: £46,000 Amount earned as an unused substitute: £552,000 (Photo by Paul Childs - Getty Images) Photo: Pool

19. West Ham - Issa Diop
Games as an unused substitute: 16 Weekly Wage: £67,000 Amount earned as an unused substitute: £1.07m (Photo by JUSTIN TALLIS/POOL/AFP via Getty Images) Photo: JUSTIN TALLIS

20. Wolves - Ki-Jana Hoever
Games as an unused substitute: 20 Weekly Wage: £40,385 Amount earned as an unused substitute: £807,700 (Photo by Naomi Baker/Getty Images) Photo: Naomi Baker