Gunners fire early warning

JEEPERS KEEPER: Luiz Junior spills ball into his net

- By Paul Anderson

GABRIEL MARTINELLI scored just 36 seconds after coming on as a substitute to fire Arsenal to an impressive win over Athletic Bilbao in their Champions League opener.

Martinelli had just been introduced as a replacement for Eberechi Eze when he raced on to fellow sub Leandro Trossard’s ball over the top.

The Brazilian took one touch with his head, and then two further touches at speed, before firing under goalkeeper Unai Simon with 18 minutes remaining.

Then with three minutes to go, Martinelli turned provider when he pulled the ball back for Trossard, whose shot at goal flicked off the upright and into the net.