Antonio Valencia agrees that keeping a fifth successive clean sheet could be the key to progressing past Saint-Etienne in the Europa League.
Manchester United entertain the French side on Thursday at Old Trafford in the first leg of the Round of 32 and have been in resolute mood in defence of late. Indeed, the Reds have been virtually impregnable in 2017 as, aside from the EFL Cup semi-final second leg defeat to Hull City, the only goal scored by an opponent was James Milner's penalty in the draw with Liverpool.
Juan Mata also unluckily put through his own net at Stoke City but the Reds have been defending superbly as a team and, with away goals crucial in European competition, another shut-out would help Jose Mourinho's men take a major step towards winning the two-legged tie.