OK, clutch.
Make sure the master cylinder piston is returning all the way back out when you release the pedal. You may have to pop the outer boot seal to see. When cold, this can start to drag in the cylinder.
Next, make sure the slave cylinder rod is adjusted for proper free play. If the adjustment is tight, that's likely normal wear on the clutch disc. But if it's loose, then the fork pin may have sheared.
Bleed as Moseso recommended...after that it's likely time to rebuild the master cylinder.
John
Oh, there is a chance there is an internal problem with the pressure plate...but it would likely drag all the time then.