clutch 307 HDI 90 CV

Good afternoon. I'm replacing the clutch on a 2007 Peugeot 307 SW. After removing countless screws, the battery tray, exhaust, fuel and air filters, starter motor, left wheel suspension, and more, the clutch assembly won't budge. Could it be that a screw from the clutch housing near the oil pump is still attached? Everything else seems loose, but the pump assembly is stuck. Thank you in advance.

If it is a 1.6 HDI you have to remove the catalyst/ particle filter and all the thermal screens, because it carries a screw behind.