Arsenal celebrated a 2-0 win over Napoli in the Europa League on Thursday.
First Aaron Ramsey slotted in after being well found by Alexandre Lacazette, and then Lucas Torreira saw his strike from the edge of the box deflect in off Kalidou Koulibaly and find the net.
The 23-year-old celebrated his goal in a special way by holding a t-shirt aloft that showed a picture of the Arsenal midfielder and another gentleman holding a Sampdoria No34 shirt. The words underneath the image read: "We love and miss you, Rafita."
suggest it is a dedication to a friend who recently died in a car accident. It is believed to be Rafael Guarino, from Torreira's hometown of Fray Bentos.
Torreira would have risked a booking had he been wearing the t-shirt underneath his kit.
UEFA's Law 4, Section 5 states: "Equipment must not have any political, religious or personal slogans, statements or images.
"Players must not reveal undergarments that show political, religious, personal slogans, statements or images, or advertising other than the manufacturer's logo."