If he can recover properly he's still more than enough of a draw for another big money loss or two against high level opponents. He could absolutely do another boxing match for massive money too if he really wanted.McGregor should retire now, lost last 3 out of 4...His shtick is getting old.
As long as he's a draw and as long as he's healthy Dana will keep throwing him top competition. They probably give him an easy match up for his comeback fight and then if he wins that they'll start talking about him fighting for the belt again because it's not based on results it's based on draw