Robin van Persie uncertain whether he will extend Manchester United deal, and admits form has not been good enough this season

Robin van Persie is out of contract in 18 months and may not sign new deal
He has eight Premier League goals this season and says he must do better
The Dutchman missed a golden opportunity against Cambridge United
Manchester United face an FA Cup replay after surprise 0-0 stalemate
Van Perise joined United from Arsenal in controversial £24m deal in 2012

Robin van Persie admits his form has been poor this season and says he does not know if Manchester United will keep him after his contract ends in 18 months.

Van Persie’s close relationship with Louis van Gaal was tested to the limit in the first half of the campaign and the United manager considered dropping him after a ‘very bad game’ against Arsenal in November.

The Holland striker’s form has improved since but he has scored only eight goals and missed one of the few chances United created in Friday’s goalless draw at Cambridge United in the FA Cup fourth round.

Van Persie is clattered by Cambridge United keeper Chris Dunn as United are held in their FA Cup encounter