A former Red Devil raised doubts over the Frenchman's consistency after his match-winning display against Newcastle at Old Trafford
Michael Owen believes Anthony Martial is a "proper player" but that he still doesn't deliver the goods on a regular basis for Manchester United.
Martial completed a £36 million ($47m) switch to Old Trafford from Monaco in the summer of 2015, and quickly established himself as one of the most promising young attackers in European football.
The France international endeared himself to the fans instantly with a debut goal against Liverpool and went on to hit 17 goals across all competitions in his first season for the Red Devils.