Only Billy Meredith and Brian Kidd seem really to be held in the same respect as Law at both clubs bearing the name of the great city of Manchester. Denis undoubtedly had his greatest days just outside the city boundary, but I think he definitely qualifies as a City legend, too, for a couple of reasons.
Firstly, he's one of only six British players to win the Ballon d'Or, and the first exposure of top-flight football to that huge talent came in our colours. Secondly, he found his way back to the path of righteousness at the end of his career, playing in an exciting if inconsistent side and managing to crown his City days with a Wembley final plus a gloriously iconic goal.
My mum once taught one of his sons and I got his autograph (Denis's, not the son's) when my dad and I went to pick her up after a parents' evening. He conducted himself very graciously in dealing with a starstruck 8-year-old and was fulsome in his comments about City when I told him I was a Blue.
I enjoyed his work as a pundit for Radio Two and Granada TV in the seventies and eighties, as well, and am not sure why that didn't last for longer. I also seem to recall what now would be called banter on his part, when he used to insist that Manchester was England's football capital ahead of less significant places such as Merseyside and London.