Like in midweek against Real Sociedad, the Argentina international started on the inside right role of our front three in the Old Trafford clash with the Gunners, and proved a threat all afternoon - but particularly in the second half, when our attacking impetus grew.
That was despite our only goal arriving in first-half stoppage time, when we took the lead through a marvellous free-kick from Bruno Fernandes.
But United sustained plenty of threat in attack thereafter, with Garnacho playing his part in that - as his crosses led to chances for Joshua Zirkzee and Matthijs de Ligt being saved in the second half.