Shakespeare said that "some are born great, some achieve greatness and some have greatness thrust upon them."
Former Barcelona manager Pep Guardiola was an exceptional player, but to be considered great, he would need to be beyond exceptional, he would need to have the kind of talent that comes only once or twice in a generation, he would need to possess the the kind of quality that you instantly recall when you are listing the best player in that particular position.
So as a player, maybe not so much but as a manager, there seems to be a growing consensus that he is indeed great. If he was to retire now his trophies alone in 4 years match up with the greatest managers many of whom have careers stretching around 20 years. His widely admired Barcelona side has many arguing that this Barcelona is the best team in history. It would seem obvious that Guardiola has achieved greatness given the 13 titles in 4 years, perhaps 14 if his side manages to beat Bilbao, however, the point that his greatness was largely thrust upon him looms large over his record.
The foreign influx in the league is often a popularly cited reason for the recent failures of England in international competitions. The argument is that the very high number of foreign players in the English Premier League (EPL) hinder the development of English talent coming through because English players are not being given a chance. In reality what the foreign influx has done is to change the landscape of the league. The cultural aspects that defined English football, its pace, its physicality, its tactical naivety, its preference of industry over creativity, are no longer strict truisms. Vast investments and relaxed rules have allowed the league to have 70% foreign players as well as a significant number of foreign coaches and managers thus resulting in an altering of the DNA of the EPL. The league's new identity is borne out by recent statistics.