Arsenal boss Wenger shared a long-standing conflict with Ferguson, who managed bitter rivals Manchester United when both sides were the cream of the crop in the Premier League for many years.Arsenal and United shared many memorable clashes in the late 1990's and 2000's with Wenger and Ferguson at the helm respectively.But their management styles greatly differed, with Ferguson becoming known for his use of the hairdryer treatment, while Wenger took a softer approach.The Scot was involved in several dressing room feuds with the likes of United legends David Beckham and Roy Keane due to his ruthless style.But speaking in the new documentary about his career, Arsène Wenger: Invincible, Wenger explained why he is not a fan of the hairdryer.
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