Anthony Martial will bring power and speed to Man Utd, says Louis Saha

   

Anthony Martial will inject some much-needed speed and power into the Manchester United forward line, says Louis Saha.

Martial became the most expensive teenager in football history on Deadline Day as he left Monaco for an initial £36m to sign a four-year deal at Old Trafford.

The 19-year-old, who has been compared to former Arsenal and Barcelona forward Thierry Henry, has had his move to United questioned, with theSunday Supplement panel branding the deal an "expensive gamble".