Tigercatatonia is always interested in the economics of pro sport in the CFL and Canada as a whole. Especially interesting is naming rights. Towards the end of this article about the chances of Quebec City landing a NHL team for their brand new arena (tl;dr not good) is some info about the naming rights for the new arena:
"The arena was built with $200-million from the provincial government,
$187-million from the city and $13-million raised from people in the
community forking out to reserve a seat. Quebecor is on the hook for
$33-million for 25-year naming rights to the arena. That increases to
$63.5 million if an NHL team is acquired."
That's $1.32 million per year without an NHL team and $2.54 million with an NHL team. The naming rights for Tim Horton's Field for the Tiger-Cats in Hamilton is rumoured to be between $1 and $1.5 million, however the Cats are broadcast across Canada on TSN while without an NHL team they're stuck with a QMJHL team.