uTorrent is a great BitTorrent client which have a free offer version.
Like any free products, ads are involved at some point. Fortunately the developers left a function for users to turn them off.
It is well hidden in the advanced features. Make sure before going forward with this procedure to not touch any other settings.
1. Go to the advanced preferences :
Options > Preferences > Advanced
2. Scroll down the list until you see option names with “offers.*” prefix and locate the following :
3. By default, it should be set to “true”, simply double-click on it to set it to “false” and click Apply.
The change should be now effective in the UI, if it does not, completely close uTorrent and start it again.