Company unlikely to collapse (4)
I believe the answer is:
firm
I believe this is a double definition.
'company' is the first definition.
(I've seen this before)
'unlikely to collapse' is the second definition.
(I've seen this before)
(Other definitions for firm that I've seen before include "Constant - concern" , "Steadfast" , "Stable; business" , "Unyielding business concern?" , "Not soft or yielding to pressure" .)