Yes. The easiest way I have found is to set up your torrent software to have a temporary (local) folder for incomplete torrents - but set the final designation to the mounted drive. Then the torrent software will take care of moving the files on it's own. I think most modern torrent client have this option - at least all the ones I have used.
AVOID saving torrent directly to a mounted cloud drive if at all possible - because torrent files are written piece by piece and there is no way to do block-level changes to a cloud drive. This would result in the full file being uploaded every time something changed - so that would be extremely slow and inefficient.
Aside from that you can use any sort of backup software (or another instance of rclone) to set up a scheduled copy or something like that - but the smoothest and easiest way is to let the torrent client handle it because then it will be all automatic.