you must at least loosen the brake booster diaphragm and move it out of the way to get the clutch master out, and then it's difficult at best----
my recommendation:
replace every thing in the system.
Brake master cylinder
blue hose
clutch master cylinder
rubber hydraulic clutch hose
clutch slave cylinder
total flush and replace the hydraulic fluid as well
it is a big chunk of money to do it this way, but look at it like this:
if these components have never been replaced/renewed, and one goes bad---the rest are sure to follow. only time will tell when further failures will happen, but if you replace them all, you are starting with a clean slate.
--Russ