I can't help but think, that Mar-Vell's business with the T-Bolts isn't what we think it is, I think something is still up with Mar-Vells health, and he doesn't have much time left
personally I think he heard about Genis's death and the role the T-bolts (not the current iteration mind you) had in it..for some reason... I dunno it makes sense
I think Mar-Vell is looking for someone to take up his legacy, thinking Hulkling is too innocent, he finds out about Genis and Phyla, but since Phy is off world, he looks into Genis, finds out about his death, goes looking for answers, Norman tells him that it's really just a dead end, Mar-Vell gives him the spiel about needing a legacy, and Norman tells him he's heard of something funny going down in the cube
ultimately leading to Mar-Vell giving Noh-Varr the responsibility of being Captain Marvel, obviously Noh will refuse at first, but upon seeing Mar-Vell die (probably in some sort of blaze of glory) Noh will take up the name, and the nega bands