Despite penning fresh terms at Camp Nou, the deal which has taken the 25-year-old to Emirates Stadium includes the option for Gunners to push through a permanent transfer in the summer.
Emery told Arsenal's website on bringing in a familiar face: “We are very happy that Denis Suarez is joining us.
Suarez has already said his goodbyes to those at Camp Nou , with an emotional message posted on social media prior to the announcement of his departure.
Suarez has been brought in by Arsenal to compete for playing time in attacking midfielder berths with Alex Iwobi and Henrikh Mkhitaryan, who is currently sidelined with a foot injury.
Suarez has just two La Liga outings to his name this season, to go along with six appearances combined in the Champions League and Copa del Rey.
In his time with the Blaugrana, Suarez scored eight goals and won five trophies: one La Liga, two Copas del Rey and two Spanish Super Cups.
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