Globetrotters have to flutter (3)
I believe the answer is:
bet
'flutter' is the definition.
(I've seen this in other clues)
'globetrotters have' is the wordplay.
'have' indicates the answer is hidden within the clue.
'BET' can be found hidden inside 'globetrotters'.
'to' is the link.
(Other definitions for bet that I've seen before include "Speculation" , "Wager, gamble" , "22 across will accept one" , "Wager, or the sum waged" , "Money risked on a gamble" .)