Newcastle have finished above Tottenham in the Premier League in three of the past four seasons. However, Spurs are still a long way clear of the Magpies in the revenue table thanks to substantial off-field income streams, which have offset difficult league campaigns.
In the respective clubs' most recent financial accounts, the Londoners generated £230m more in revenue than Newcastle.
Spurs are now looking to make the most of such headroom by raising their salary ceiling.
In an interview with BBC Sport, in May, the club's chief executive Vinai Venkatesham confirmed the change in approach and said they needed "experience, leadership and also that kind of physical robustness".
Sandro Tonali fits this description on his day.