The Brazilian converted his spot-kick in the shootout as the Gunners secured a 4-3 victory.
Mikel Arteta was full of praise for Bruno Guimaraes after the midfielder made his Arsenal bow in a pre-season friendly against Como.
The manager revealed that the marquee signing had completed just three training sessions before being thrown into the action. Despite the limited preparation time, Arteta insisted the new arrival made a significant impression during his first minutes in an Arsenal shirt.
“He was pushing to play a few minutes and perform in front of our fans,” the Spanish coach remarked.
“He has only had three training sessions, but he looked good; we will see,” he concluded, looking ahead to the Community Shield showdown against Manchester City next Sunday.
