The UEFA Champions League returns this week with a revamped format that looks set to take European football by storm. Gone is the classic group stage format that saw a qualified team play three sides home and away with the the top two advancing to the knockout stages, with a new league system now introduced which will see the likes of Arsenal play eight different teams, with four at home and four away. With the competition kicking off tonight with some big ties this week, the new format will see the biggest change to European football since the Champions League revamped in the 1990s, with the …