Think they might call round? Time to go (5)
I believe the answer is:
guess
'think' is the definition.
(I know that guess is a more specific form of anticipate)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for guess that I've seen before include "Make stab at" , "Estimate roughly" , "Estimate, supposition" , "Surmise" , "Conjecture - estimate" .)