Keep in mind that my "new bike" is yet 10+ years older than yours but I had the same symtoms. First thing I attemted was to bleed the clutch and after a snapped bleeder screw I ordered a new banjo bolt but to meet order minimum I ordered a clutch master as well. Same results, so I removed the slave and found the o-rings in poor shape so order that also. Still the clutch would drag so I pulled the clutch cover off and removed the clutch pack and found that the inner 2-3 plates and discs were all but stuck together with very sticky ATF, I cleaned them up with brakleen and installed and it seems to be ok. In talking with the previous owner he stated that it had not been ran for almost 2 years so maybe thats why the plates were stuck.
Good luck!