The one thing that can separate Luis from Azpilicueta and make him the first choice pick.
Branislav Ivanovic has upped his game this season and has made sure that he gets forward more than Mourinho asks him to – and if Luis provides a similar width on the opposing flank, he will be in that starting line up in no time.
Luis is a natural left back, unlike Azpilicueta and is far more used to providing width and helping with the attacking side of things.