Manchester United defender Rio Ferdinand is struggling to make their clash at Arsenal.

United centre-back Ferdinand's long-term back injury has flared up again, says The Sun.

Ferdinand, 33, felt a pull in training on Thursday.

He complained of pain after a routine challenge. Ferdinand was quickly sent for a scan which revealed it was the same trouble which has dogged him in recent seasons.

Ferdinand has a problem at the base of his back, leaving him in agony and struggling for mobility.

He missed yesterday's session at United's Carrington base.