Manchester United face Arsenal in the FA Cup sixth round on opening night . United striker Louis van Gaal has been criticised for his tactics this season . Star striker Wayne Rooney has been deployed largely in midfield this term . striker Marouane Fellaini has been used as a target centre forward too . Martin Keown : Manchester United vs Arsenal is a classic rivalry . Manchester United vs Arsenal : headline news , probable line commentary and more . CLICK HERE for all the latest Manchester United news .
Manchester United face Arsenal in the FA Cup sixth round on Monday night . United boss Louis van Gaal has been criticised for his tactics this season . Star striker Wayne Rooney has been deployed largely in midfield this term . Midfielder Marouane Fellaini has been used as a target centre forward too . Martin Keown : Manchester United vs Arsenal is a classic rivalry . Manchester United vs Arsenal : Team news , probable line ups and more . CLICK HERE for all the latest Manchester United news .