With the fixtures computer having handed Emery the toughest possible start to his Arsenal tenure it is just as well he is getting his house in order early...
Torreira arrival at Arsenal will follow the signings of Sokratis Papastathopoulos from Borussia Dortmund, Bernd Leno from Bayer Leverkusen and Stephan Lichtsteiner following his release from Juventus.
Torreira is now with his country Uruguay at the World Cup where they are preparing to face France in the quarter-finals on Friday.
Although he played at right-back occasionally under Emery's predecessor Arsene Wenger he is normally a centre-back and will compete with the likes of veteran French global Laurent Koscielny and new Greek arrival Sokratis Papastathopoulos, who signed on Monday for a reported fee of £17.7million ($23.3million, Sh2.3 billion).
England global defender Calum Chambers is willing to battle to gain a first choice place at Arsenal after signing a long term contract on Tuesday.
Take a look through the gallery above to see the best pictures as Unai Emery takes his first Arsenal training session.
Aubameyang and Alexandre Lacazette showed signs for forming a fruitful partnership towards the back end of last season although the Frenchman was forced to stick it out on the wing, while Emery is also said to be a fan of Alex Iwobi who could still turn out to be a useful asset.