The Magpies have used 27 senior talents in the Premier League this term – the joint-fourth-highest tally in the division and just three behind West Brom’s largest total of 30.
Of course, within that tally there are some players who have been given more minutes 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...

9. Leeds United - Kiko Casilla
Games as an unused substitute: 30 Weekly Wage: £32,115 Amount earned as an unused substitute: £963,450 (Photo by Peter Powell - Pool/Getty Images) Photo: Pool

10. Leicester City - Cengiz Under
Games as an unused substitute: 17 Weekly Wage: £94,231 Amount earned as an unused substitute: £1.6m (Photo by Michael Regan/Getty Images) Photo: Michael Regan

11. Liverpool - Alex Oxlade-Chamberlain
Games as an unused substitute: 12 Weekly Wage: £120,000 Amount earned as an unused substitute: £1.44m (Photo by Zac Goodwin - Pool/Getty Images) Photo: Pool

12. Manchester City - Sergio Aguero
Games as an unused substitute: 7 Weekly Wage: £230,135 Amount earned as an unused substitute: £1.61m (Photo by Laurence Griffiths/Getty Images) Photo: Laurence Griffiths

