The moment Gabriel Martinelli injured himself during warm-up ahead of Newcastle FA Cup clash

Arsenal youngster Gabriel Martinelli has been ruled out of the FA Cup clash with Newcastle after appearing to badly hurt his ankle in a freak warm-up injury.

Martinelli was taking part in a pre-match possession drill when his studs looked to get caught in the Emirates turf.

The Brazilian forward saw his knee jolt and his body weight go over on his right ankle and was quickly left in a heap on the floor, prompting his team-mates to urge for medical attention.

Martinelli was replaced in the starting lineup by Reiss Nelson, and is now set to undergo further medical examination.

The Gunners defeated Newcastle 2-0 after 120 minutes at Emirates stadium after Smith-Rowe and Pierre-Emerick Aubameyang handed Mikel Arteta side the win to advance to the next round of the FA Cup.