Manchester United's record signing Juan Mata has proven that he is a world-class playmaker when he is on form.
The 25-year-old scored and created goals for fun during his first two seasons at Stamford Bridge.
However Jose Mourinho decided to omit Mata, who claimed 27 Premier League assists during his time at the Blues, from Chelsea's first-team plans as he thought the Spanish international was not up to scratch defensively.
That decision could come back to haunt Mourinho in the next few years.
Assists per game ratio: 0.329