This app was mentioned in 3 comments, with an average of 1.00 upvote
I'm not sure about uTorrent, but I've sideloaded tTorrent and it works fine - it prompts me where to download it and I can save it to my 2TB NTFS drive.
tTorrent's description says it can create torrent files: "create and share new torrent files". I haven't tried it, but it's the only client I use if I want to download on my Android. Worth a try ;)
https://play.google.com/store/apps/details?id=hu.tagsoft.ttorrent.noads