#1 Zlatan Ibrahimovic
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The Swedish superstar was at the peak of his powers when Pep decided to bring him to the Nou Camp from Inter Milan in 2009.
The deal saw Barca splash £52.13m in cash and part with Samuel Eto'o to land the towering striker and Ibra didn't disappoint as he had a fantastic start with the Blaugrana, scoring a goal in each of his first five league games, setting a new record.
However, things quickly turned sour as Guardiola and Messi 'supposedly' colluded to oust the Swede from the team. Pep restricted the giant Swede's game time and mid-way through the season, the two collided.
Zlatan scored 22 goals in 46 appearances for Barcelona before being shipped off to AC Milan at the end of the season. He has since made his hatred for Pep public, going as far as calling him a 'coward.