Aston Villa's assistant manager is the proud owner of arguably the most impressive beard in the Premier League after growing his facial fluff over the course of several months.With lengthy beards enjoying a style comeback in recent years and Keane leading the way with his, Sportsmail decided to take a look at how other faces from planet football - and elsewhere - would look with the 43-year-old's bristles.(dailymail.co.uk)Bakudaily.Az