Here are the confirmed line-ups for the big game
Dortmund
Weidenfeller, Großkreutz, Subotic, Sokratis, Schmelzer, Bender, Sahin, Mkhitaryan, Blaszczykowski Reus, Lewandowski.
Subs: Langerak, Durm, Kirch, Kehl, Aubameyang, Hofmann, Schieber
Arsenal
Szczesny, Sagna, Mertesacker, Koscielny, Gibbs; Arteta, Ramsey; Rosicky, Ozil, Cazorla; Giroud.
Subs: Fabianksi, Vermaelen, Monreal, Gnabry, Jenkinson, Hayden, Bendtner