Barca welcome the Gunners to the Camp Nou today with a 2-0 aggregate lead following their victory at the Emirates.
Turan joined Barca last summer but was unable to play for six-months due to the FIFA transfer ban put in place restricting the club from registering new signings.
The Turkish international was registered for the first-leg game against Arsenal but missed out due to a suspension he carried over from last season while playing for Atletico Madrid.
The bearded winger has been in impressive form for Barca recently providing an assist and scoring a bicycle kick on the weekend in the 6-0 win over Getafe.
Turan has a total of four assists and two goals in all competitions for Barca this season winning all 15 games he has featured in.
Enrique will be without Gerard Pique due to suspension while Masip, Douglas and Adriano did not get picked for the match.
The Full 18-man squad is as follows:
Ter Stegen, Bravo, Rakitic, Busquets, Alves, Arda Turan, Iniesta, Suárez, Messi, Neymar Jr, Mascherano, Bartra, Munir, Jordi Alba, Sergi Roberto, Aleix Vidal, Vermaelen and Mathieu.