Bayern Munich chief Karl-Heinz Rummenigge has branded Paris Saint-Germain striker Zlatan Ibrahimovic 'stupid' for his contentious comments about the club's manager Pep Guardiola.

Ibrahimovic was a club record acquisition for Barcelona during Guardiola's illustrious tenure at the Camp Nou, but the relationship between the pair soured dramatically, leading to the player being sold after only one season.

According to the Sweden captain, Guardiola is a 'coward' for the way he acted during their time together at Barcelona and has slammed the now Bayern boss for his 'bull***t' coaching sessions.

Ibrahimovic, though, has been widely panned for his accusations against Guardiola, with Rummenigge following Uli Hoeness in voicing his displeasure at the behaviour of the Swede.

"I would recommend to him to keep a sense of proportion. He's been previously convicted by Uefa [after being sent off last season]," he told reporters.

"That's gross unsportsmanlike behaviour. I would not do that if I were him, otherwise Uefa might consider this case. But maybe stupidity is part of developing your character."

Ibrahimovic, meanwhile, is set to lead the line for PSG on Wednesday evening when they host Benfica at the Parc des Princes in their Champions League group C encounter.

PSG thrashed Olimipiacos in their opening encounter of this year's competition, and Ibrahimovic has outlined his intention to go all the way with the French champions.

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