The FC crew agree that Man United will have to dig deep against Barcelona to reproduce a comeback reminiscent of what they pulled off in Paris. Manchester United goalkeeping coach Emilio Alvarez says David De Gea has done "super special preparation" before facing Barcelona's Lionel Messi in Tuesday's Champions League encounter at Camp Nou. United need to overturn a 1-0 deficit in the quarterfinal and Messi, who has scored 44 goals in all competitions this season, was one of 10 players rested for Barca's 0-0 draw at Huesca in preparation for the Champions League tie. CHAMPIONS LEAGUE It's time to find a way to fix the Champions League -- or start a European Super League - Latest Champions League tables - Champions League statistics - All the latest UCL news Asked about the challenge of taking on a player like Messi, Alvarez told...