The Rebel force attempts to escape the Imperial ship by stealing a TIE fighter, and Draven makes the decision to stay behind in order to help everybody else escape.
The current Star Wars comic book run takes place in between the first two episodes of the original trilogy and is currently focused on an infiltration of an Imperial ship by Princess Leia and General Draven, among others, in order to obtain yet another collection of Imperial data.
Draven has changed following the events of Rogue One: A Star Wars Story and is now more willing to not only allow risk in service of the Rebellion but as the new comic, #54 shows (h/t to ComicBook.com), he’s also willing to risk his own life.