Game plan from cat, TC, is flawed (7)
I believe the answer is:
tactics
'game plan' is the definition.
(I've seen this before)
'cat tc is flawed' is the wordplay.
'flawed' indicates anagramming the letters (I've seen this in other clues).
'cat'+'tc'+'is'='cattcis'
'cattcis' is an anagram of 'TACTICS'.
'from' is the link.
(Other definitions for tactics that I've seen before include "The means adopted to achieve an end" , "Short-term strategy" , "Actions planned to achieve an end" , "Art of military manoeuvre" , "Use of available means to reach an end" .)