Champions League last 16 drawGalatasaray     vs     FC SchalkeCeltic     vs     JuventusArsenal    vs    Bayern MunichShakhtar Donetsk     vs    Borussia DortmundAC Milan     vs     BarcelonaReal Madrid    vs     Manchester UnitedValencia     vs     Paris Saint-GermainPorto     vs     MalagaManchester United have drawn Real Madrid in the last 16 of the Champions League, while Arsenal must face the mighty Bayern Munich after the draw was made in Nyon, Switzerland.Scottish champions Celtic, the relative minnows of the draw, were pitted against Italian giants Juventus.The first legs will take place on February 12, 13, 19 and 20 and the return games on March 5, 6, 12 and 13.Three-times winners United, whose last competitive clash against Real was a thrilling Champions League knockout clash in 2003, will be reunited with their former winger Cristiano Ronaldo.The ‘other’ Ronaldo famously hit a hat-trick in their last competitive clash, a 4-3 win for United that saw nine-times European champions Real go through 6-5 on aggregate.Arsenal, who have never won Europe’s premier club competition, face one of the few sides to have the upper hand on them in European football, with four-times champions and in-form Bundesliga leaders Bayern the prize for Arsene Wenger’s side.Bayern actually lost 1-0 to Arsenal in their last encounter in 2005.Thierry Henry’s strike the difference, but the German giants went through on aggregate.Favourites Barcelona must negotiate former winners AC Milan, who have fallen on hard times recently.Other clashes see Turkish side Galatasaray face Germany’s Schalke 04, while 2009 UEFA Cup winners Shakhtar Donetsk host Bundesliga champions Borussia Dortmund.Qatari-owned Paris Saint-Germain visit Spain’s Valencia in their first leg, while 1986 and 2004 winners Porto host another oil-rich club in Malaga.