slave cylinder

Hey guys, I tried getting to my slave cylinder the other day and I have no idea how to get it out, it seems really far in. All help is appreciated

I just bled my front brakes (the fluid looked real old) and then went on to the clutch. Undid the master reservoir screws, sucked out most of the old stuff with a syringe, topped it up with fresh fluid. Then loosened the bleed screw on the slave cylinder and pulled the clutch lever - old dirty...