5 of the best squad players of all time 

#4 Arjen Robben (Chelsea 2004-05)

A young Arjen Robben was immense for Chelsea in Jose Mourinho's debut season

It is quite hard to imagine Dutch star Arjen Robben as a 'squad player' but back in Jose Mourinho's first season at Chelsea in 2004-05, he was exactly that and the primary reason was that he was injured at different points of the season.

Chelsea had paid £18 million to PSV Eindhoven to bring Robben to Stamford Bridge and the 21-year-old was already one of the biggest talents in Europe, which is why there were high hopes about his impact on English football.

After recovering from an injury suffered in a pre-season game, Robben made his debut in the Premier League four months into the season but went on to play a major role in Chelsea's surge to the title.

Robben's talents as a wide player often proved to be a bit too much to handle for plenty of Premier League defenders and in a total of only 18 appearances in the league, he netted 7 times to make a telling contribution as largely a squad player. He started 14 games and came off the bench 4 times.

In the Champions League, he started 2 games and was substitute in 3 games, during the course of which he scored a solitary goal. Chelsea won the title at a canter and reached the semi-final of the Champions League but Robben wasn't a part of any of that since he had suffered another injury.

That being said, there is no doubt that he was a vital cog in the wheel for Chelsea's first title win in 55 years.