Conclude contract (6)
I believe the answer is:
gather
I believe this is a double definition.
'conclude' is the first definition.
(gathering is a kind of concluding)
'contract' is the second definition.
(thesaurus)
(Other definitions for gather that I've seen before include "Assemble; understand" , "Assemble or glean" , "Bring or assemble together" , "put in pleats" , "Collect or come together" .)