#1 Dele Alli (£50,000-a-week)

Considered as the future of English football, Dele Alli is one of the best young midfielders that the country has produced in recent years. At just 21, he won the PFA Young Player of the Year award in consecutive seasons and for the last two years, earned a place in the Premier League's PFA Team of the Year too.
Alli has netted 39 goals for Spurs thus far and equally played a pivotal role in their success over the last two seasons, even if it has not resulted with silverware yet.
Young, quick and intelligent enough to make brilliant runs into dangerous areas in attack, he continues to mature as a player and his well-taken brace against Real at Wembley last week is a perfect example of how well he can handle big game pressure.
He currently earns £50,000-a-week at Tottenham. Not only is this wage less than many of his team-mates, but it doesn't do Alli or his quality much justice either. Considering his talent and potential to continue improving with time, he's arguably the most underpaid footballer across the world currently.
Still only 21, he's got a massive future ahead of him. Plenty of Europe's top sides continue to circle like vultures around him in an attempt to try and lure him away from Spurs - so it's imperative that chairman Daniel Levy breaks the wage structure to keep their best players, otherwise they run the risk of losing out to their rivals.
Note: Most of the player salaries are taken from totalsportek.com