5 players Chelsea should not have sold
3) Arjen Robben
The Bayern Munich veteran midfielder is one of the best in the world. At the age of 34, he is still capable of playing at the highest level of professional football for Bundesliga Champions, Bayern Munich.
Robben is extremely skilled in his passing and averages an 85% pass accuracy in Bundesliga this season. After making 34 appearances for the German club, he has found the net seven times and provided six assists.
The Dutchman is often in a league of his own. Not only can he play as a winger, he deals comfortably with pressure at the back too and is always more than willing to lend a helping hand to his team. At Bayern, Robben's defensive work improved and he was even named the fourth-best footballer in the world in 2014 by the Guardian.
From 2004-2007, Robben played for Chelsea and helped his club to become the league champions. However, it seemed like Robben did not enjoy his time with the English side. In 2007 after he moved to Real Madrid, he mentioned that he felt a lack of support from Mourinho, who was Chelsea's manager at that point in time.
The Dutch winger has been getting better and better even as he ages and it had been a waste for Chelsea to let go of him when he was younger.