The evolution of Guardiola and Arteta as managers and friends

Manchester City will host Arsenal in a pivotal Premier League clash that could decide the title, with both sides sitting atop the table. European football analyst Guillem Balague examines how Pep Guardiola and Mikel Arteta have developed tactically and mentally since taking charge,

As Manchester City prepare to host Arsenal in Sunday's crucial Premier League meeting between the top two, European football expert Guillem Balague looks at how the two managers have evolved.