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...