Connecting my extra circuit added to the AES PIPELIEND DCP with a clock

[alimousios98x]

As you mentioned in my previous issue there are indeed three clocks but it seems that they are limited inside of a site as their ROUTE_STATUS is INTRASITE and I cant connect them to the extra circuit. For example pll_clk1:

I explored the netlist schematic and found past the IBUF and the BUFGCTRL, a clock net that is being used by other parts of the circuit:

So is the crypt_clk an appropriate input clock for my extra circuit since this one seems to be used by other parts of the design as well? I dont see any other that i am able to route to my circuit.