Fiats tend to refuse to release properly before they slip, so it could be a gearbox oil leak. But either way the clutch as to come out.
Don't forget to check the gearbox input shaft. Any bearing slack needs a rebuild as the seal will soon fail and gears wont select properly.
If it's an HGT, also whip off the gearbox back cover and clean it out. Any clag in there affects gear selection.