The Uruguay midfielder is on-loan at Fiorentina from the Gunners.
Torreira admitted he was a little starstruck at some of the names he saw by his side as he prepared for matches.
In a public letter titled 'Made in Fray Bentos', Torreira wrote: “Every time I go to the national team, I try to make the most of my proximity to certain champions. I have been lucky enough to meet many of them.
“You can imagine; me drinking and them next to me. Here we are, in London."