Getty compositeMark DoyleFrom Barcelona to Real Madrid: The Champions League last 16 rankingsChampions LeagueBayern MunichFC PortoReal MadridAjaxOpinionBarcelonaLyonPremier LeagueLaLigaParis Saint-GermainManchester UnitedBundesligaJuventusSchalke 04Serie ATottenhamBorussia DortmundLiga PortugalManchester CityRomaLiverpoolAtletico MadridLigue 1Ahead of the draw for the last 16 on Monday, Goal evaluates all of the remaining challengers in this season's competition