Curran was supposed to fight Alvarez in October, but a shoulder injury suffered in training forced the 23-year-old to pull out of the fight. Instead, Alvarez fought Roger Huerta in a non-title fight and defeated him via second round TKO (doctor stoppage).
Curran (12-3) earned the title shot by defeating Mike Ricci, Huerta and Toby Imada in Bellator's season two lightweight tournament.
Alvarez (21-2) is 5-0 in Bellator. He won the title after beating Imada in the finals of Bellator's first lightweight tournament in 2009. He has yet to defend the title.