Great man capable of corrupt taint (5)
I believe the answer is:
titan
'great man' is the definition.
(I've seen this before)
'corrupt taint' is the wordplay.
'corrupt' indicates anagramming the letters.
'taint' anagrammed gives 'TITAN'.
'capable of' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for titan that I've seen before include "distant moon" , "primordial god" , "bigwig" , "Old giant" , "very big" .)