Reaction after teenager Gabriel Martinelli scored twice and set up another goal in a stellar performance as Arsenal thrashed Standard Liege 4-0 in Europa League Group F.

“In pre-season he was perfect with us all the time playing and training,” said the Spaniard. “I spoke with him to be calm because opportunities to play like tonight will arrive if he continues to train and if he continues to be that hungry.

“I think he is going to do well and tonight confirmed that.”