That’s not hard to believe, given his body of work across Marvel and DC Comics, and how he’s written for Superman, Batman, and just about every hero in between.
The Doctor is very much a personality on par with those big heroes, so I can imagine Morrison’s writing style would lend itself to the series rather easily.
While Grant Morrison said that he’s always loved Doctor Who, especially Steven Moffat’s run writing the series, he did not offer his opinion on current showrunner Chris Chibnall’s work, though he does seem to be hopeful that his ideas may be put to use someday.