#4 Dani Alves
Guardiola's main problem during his debut campaign in England was the defence. The players he had at his disposal were not ready, nor good enough, to effectively answer his high demands in a new system. So at the end of that season, it became clear that he was going to embark on a shopping spree - particularly to reinforce his full-back positions.
His first wish for the right-hand side was Dani Alves, who was playing for Serie A giants Juventus at the time. Guardiola and Alves had previously worked together at Barcelona from 2008 to 2012 and the experienced Brazilian did nothing to dispel speculation surrounding a reunion.
However, a proposed transfer was said to have collapsed due to family demands. So instead, he joined Paris Saint-Germain on a two-year deal and Pep found an expensive alternative in England's Kyle Walker.