#4 David Silva - Manchester City
Silva was signed by City back in 2010, and without a shadow of a doubt, he has been their most important midfielder in the last decade or so, winning 3 Premier League titles in a short span of 8 years.
With Manchester City's winning run being far from vulnerable, it looks like they are yet again the contenders of winning the title, and Silva can surely play an important role in achieving the feat.
A fan-favourite, Silva hasn't been surrounded by a sort of transfer speculation in a very long time, but it is for sure that he is going to stay at the Etihad for a very long period of time. Being their most important midfielder makes him more secure, and his love for his club can make him stay until he retires. At the age of 32, Silva still has a lot left in his tank.