If the Jays could get him for nothing, all aboard.
Though I bet the Cards still value him highly and probably want a decent package to move him, or else they'll go into 2024 with both Goldy/Arenado hoping they're better.
Jays rotation in 2024 is set with Gausman, Bassitt, Berrios, Manoah (cross fingers) and they could sign anyone to be the No. 5 starter. Bullpen should be fine as well, maybe some new faces. They'll have to find someone for 2B, whether they platoon Biggio/Espinal or go after someone else. As well, they'll need a LF though that shouldn't be too difficult. I think Arenado won't break the bank in terms of what the Jays can and can't do.