Similar thing happended to me at the start of last summer. Difference being that I had an uprated slave cylinder.
I stopped for petrol and noticed some fluid hitting the exhaust. It seemed to be clear so thought cant be oil or coolant.
Looked around the bike for ages, couldnt see any leaks so rode of carefully. Keeping an eye on the engine temp etc, trying to limp home.
Then just getting into London, in heavy traffic, noticed that my clutch was playing up. Bingo! The clear stuff was brake fluid coming from the slave. You should have seen me trying to ride the bike through rush hour traffic with NO clutch!!
Thank gawd that Ducati make a decent gearbox!!!!
Managed to make it to a garage, get some more fluid and quickly bleed it,spilling tons of fluid everywhere! ( YUK) Thanks for lending me the rubber tube Mr garage man.
Got back and fitted the standard slave cylinder. Touch wood its worked ever since
DC