10 Best Ever Football Insults

It's fair to say that Zlatan Ibrahimović isn't the biggest fan of Pep Guardiola. The Swede played under the Spaniard for just a solitary season at Barcelona but soon made up his mind about the man he described as "the most immature manager he has ever worked with."

Indeed, Zlatan tears Pep to pieces in his autobiography; at one point comparing him to Jose Mourinho by stating, "If Mourinho brightens up the room, Guardiola pulls down the curtains."

Ibra saves his most savage put-down for when he confronted his manager in the dressing room following Barca's Champions League exit at the hands of Inter Milan (then managed by Mourinho) in 2010:

"Guardiola was staring at me and I lost it. I thought, 'There is my enemy, scratching his bald head!' I yelled: 'You haven't got any balls... you might have expected Guardiola to say a few words in response, but he's a spineless coward."