Lots managed to crack (4)
I believe the answer is:
slot
'crack' is the definition.
(thesaurus)
'lots managed' is the wordplay.
'managed' indicates anagramming the letters.
'lots' with letters rearranged gives 'SLOT'.
'to' is the link.
(Other definitions for slot that I've seen before include "Fit into puzzle" , "Narrow opening as in gaming machine" , "Opening for coin or TV programme" , "Space for coin or programme" , "Scheduled time -- aperture for coins" .)