A "support striker" is a soccer player who helps the main striker score goals by passing the ball and creating opportunities for scoring. Full definition
The Ox desperately needs confidence and e may feel a bit happier against lower League opposition and he may be played as support striker. (justarsenal.com)
If you want to use Sanchez as striker he should be playing supporting striker in a 4 -4-2 like with De Natale at Udinese. (justarsenal.com)
Ozil in support striker role like Bergkamp. (justarsenal.com)