Jared Leto is returning to the bigscreen for the first time since 2009, as the 30 Seconds to Mars frontman has closed a deal to join indie drama “Dallas Buyers Club” alongside Matthew McConaughey and Jennifer Garner.Story centers on an AIDS patient (McConaughey) who contracts the disease in 1986 and survives six years by illegally smuggling medicine into the U.S. Leto will play a fellow AIDS patient who meets McConaughey’s character in the hospital. Jean-Marc Vallee is directing a script by Craig Borten and Melisa Wallack. Truth Entertainment and Voltage Pictures are financing the production, which begins Sunday in New Orleans. Robbie Brenner and Rachel Winter are producing. Leto, represented by CAA and Untitled, isn’t abandoning the rock-star thing: he recently concluded a tour with 30 Seconds to Mars, which is working on its next album.