do we need a natural left footed winger?

is ashley young good enough to play on the left? based on todays performance and performances before he got injured it would appear not, but he made his name on the left with aston villa and was on fire at the beginning of the season, so what changed? lack of confidence?

atm prob nani is the better option on the left as he rarely lacks confidence even though he prefers and plays better on the right, so we have the best right wingers in valencia and nani probably in the country and if only ashley young could regain his confidence then we would be unstoppable on both wings instead of relying heavily on valencia on the right

do we need a natural left footed winger? or will ashley young come good? and what about nani?